solominer247
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May 19, 2019, 05:34:40 PM |
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Wouldn't four double PCIe cables mean you can connect four GPUs? Then use four of the remaining single ones for GPU 5 and 6?
Sorry, I'm getting confused with the cables, apologies. I've managed to connect 2x Radeon VII with 4 x 8-pin pcie cable. Now I have 5 of these : https://images.evga.com/products/gallery/100-CK-1300-B9_XL_4.jpg (I think its 6+2pin + 6pin connector)
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joseph32
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May 19, 2019, 05:42:59 PM |
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Never touch any adapter if you don't want to burn your house down!
1 slot in your PSU for 1 slot in your GPU, if you want to make it correct. So you can fire up 4 GPU's. A 5th card if you use the last 9th PCIe and a good (not cheap!) CPU/PCIe cable.
Many ppl will say "Hey, just use 1 cable for 1 GPU. Get any cheap chinese adapter and its fine."... Never do this! These cables were made cheaply and get very hot and if you are unlucky, it can burn.
Edit: Yes, just connect 1 of these double cables (6+2 and 6) into 1 slot in your GPU, forget the 6 Pin.
DON'T split the remaining 6 Pin with an adapter into 8 Pin and connect the second slot of that same GPU!
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psychosunshine
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May 19, 2019, 08:48:59 PM Last edit: May 19, 2019, 09:20:57 PM by psychosunshine |
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I got two Radeon VII from AMD the Red 50 Year Anniversary Gold Edition. https://www.amd.com/en/products/graphics/amd-radeon-viiWhen I run only 1 of them at stock settings, I get about 2900 h/s. When I run both of them. I only get about 3800 h/s. I would expect about 5800 h/s. What do you think is going on? I am using XMRig AMD 2.14.1 with Windows 10. It automatically compiles the config file. This is what it gives me. See below: "threads": [ { "index": 0, "intensity": 960, "worksize": 8, "strided_index": 2, "mem_chunk": 2, "unroll": 8, "comp_mode": false, "affine_to_cpu": false }, { "index": 0, "intensity": 960, "worksize": 8, "strided_index": 2, "mem_chunk": 2, "unroll": 8, "comp_mode": false, "affine_to_cpu": false }, { "index": 1, "intensity": 960, "worksize": 8, "strided_index": 2, "mem_chunk": 2, "unroll": 8, "comp_mode": false, "affine_to_cpu": false }, { "index": 1, "intensity": 960, "worksize": 8, "strided_index": 2, "mem_chunk": 2, "unroll": 8, "comp_mode": false, "affine_to_cpu": false } ], I'm tempted to just take one out and run it in another PC. But, there must be a way to get them to work at full mining speed together. My junction temp is 85° now with two cards. And before with only one it was around 95°. So, with one, it was definitely working harder. I also just noticed that GPU-Z reports my memory as Samsung. Do you think that it is being reported correctly? See Below: http://foxautomation.com/gpuz/Capture.gif
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solominer247
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May 19, 2019, 10:32:50 PM |
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Never touch any adapter if you don't want to burn your house down!
1 slot in your PSU for 1 slot in your GPU, if you want to make it correct. So you can fire up 4 GPU's. A 5th card if you use the last 9th PCIe and a good (not cheap!) CPU/PCIe cable.
Many ppl will say "Hey, just use 1 cable for 1 GPU. Get any cheap chinese adapter and its fine."... Never do this! These cables were made cheaply and get very hot and if you are unlucky, it can burn.
Edit: Yes, just connect 1 of these double cables (6+2 and 6) into 1 slot in your GPU, forget the 6 Pin.
DON'T split the remaining 6 Pin with an adapter into 8 Pin and connect the second slot of that same GPU!
Hey mate, thanks for reply man. "Edit: Yes, just connect 1 of these double cables (6+2 and 6) into 1 slot in your GPU, forget the 6 Pin." The RADEON VII requires 2x 8-pin power. You're saying to connect only 1 of the 6+2 and 6 into 1 slot in the GPU, will the GPU still work, because 2x 8-pin power is required? "DON'T split the remaining 6 Pin with an adapter into 8 Pin and connect the second slot of that same GPU!" Ouch! I was going to do that tomorrow when the adapter arrived. Thanks man, I will give it a miss now. I still have my Corsiar PSU, that has the exact cables that are required for RADEON VII to work, do you think its OK to use corsair cables?
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badbart
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May 19, 2019, 10:38:57 PM |
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Never touch any adapter if you don't want to burn your house down!
1 slot in your PSU for 1 slot in your GPU, if you want to make it correct. So you can fire up 4 GPU's. A 5th card if you use the last 9th PCIe and a good (not cheap!) CPU/PCIe cable.
Many ppl will say "Hey, just use 1 cable for 1 GPU. Get any cheap chinese adapter and its fine."... Never do this! These cables were made cheaply and get very hot and if you are unlucky, it can burn.
Edit: Yes, just connect 1 of these double cables (6+2 and 6) into 1 slot in your GPU, forget the 6 Pin.
DON'T split the remaining 6 Pin with an adapter into 8 Pin and connect the second slot of that same GPU!
Hey mate, thanks for reply man. "Edit: Yes, just connect 1 of these double cables (6+2 and 6) into 1 slot in your GPU, forget the 6 Pin." The RADEON VII requires 2x 8-pin power. You're saying to connect only 1 of the 6+2 and 6 into 1 slot in the GPU, will the GPU still work, because 2x 8-pin power is required? "DON'T split the remaining 6 Pin with an adapter into 8 Pin and connect the second slot of that same GPU!" Ouch! I was going to do that tomorrow when the adapter arrived. Thanks man, I will give it a miss now. I still have my Corsiar PSU, that has the exact cables that are required for RADEON VII to work, do you think its OK to use corsair cables? I have those adapters and one did burn. I just buy another psu, they are cheap.
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solominer247
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May 19, 2019, 10:42:26 PM |
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I have those adapters and one did burn. I just buy another psu, they are cheap.
Hey mate, I purchased the PSU brand new only to be used for Radeon VII You expect EVGA top range products such as G2 to have spare cables... Can't I use corsair cables instead?
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joseph32
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May 19, 2019, 10:51:40 PM |
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I have those adapters and one did burn. I just buy another psu, they are cheap.
Hey mate, I purchased the PSU brand new only to be used for Radeon VII You expect EVGA top range products such as G2 to have spare cables... Can't I use corsair cables instead? Different brands, different connectors ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) But some brands are using the same manufacture, like EVGA and SuperFlower for example. But there are good cable mods on the market. If you don't have enough original cables, just order a few of them. But remember, don't buy the cheap ones. Someday you will regret that decision. Always buy from brands with reputation and read carefully the comments on like Amazon. If you see pictures with smoked or burned cables, skip them! @badbart: ...until your home burns down my friend.
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solominer247
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May 19, 2019, 10:55:00 PM |
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Different brands, different connectors ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) But some brands are using the same manufacture, like EVGA and SuperFlower for example. But there are good cable mods on the market. If you don't have enough original cables, just order a few of them. But remember, don't buy the cheap ones. Someday you will regret that decision. Always buy from brands and read carefully the comments on like Amazon. If you see there smoked or burned pictures, skip them! If the corsair cables fits, would you say I'm good to use the cables? Yeah mate, I always read comments before I purchase anything, but thanks for the heads up. BTW, do you know any stable settings for Radeon VII to work with Nicehash?
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joseph32
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May 19, 2019, 10:57:51 PM |
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They dont fit, I'm nearly sure. But in case they will, you have to check the assignment of the pins. You can find that diagrams on their homepages or try to google them.
Nope, I dont have any of these Radeons, only tons of Vegas. Tested one and sent it back after testing.
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solominer247
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May 19, 2019, 11:04:08 PM |
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They dont fit, I'm nearly sure. But in case they will, you have to check the assignment of the pins. You can find that diagrams on their homepages or try to google them.
Nope, I dont have any of these Radeons, only tons of Vegas. Tested one and sent it back after testing.
I wanted to ask. When connecting the 3rd Radeon VII GPU, instead of adapters, if I was to use 2 of these : https://images.evga.com/products/gallery/100-CK-1300-B9_XL_4.jpg , that would still work rite? 1 for each port on GPU as 2x 8-pin power is required, the 6-pin will not be used...
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joseph32
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May 19, 2019, 11:47:17 PM |
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They dont fit, I'm nearly sure. But in case they will, you have to check the assignment of the pins. You can find that diagrams on their homepages or try to google them.
Nope, I dont have any of these Radeons, only tons of Vegas. Tested one and sent it back after testing.
I wanted to ask. When connecting the 3rd Radeon VII GPU, instead of adapters, if I was to use 2 of these : https://images.evga.com/products/gallery/100-CK-1300-B9_XL_4.jpg , that would still work rite? 1 for each port on GPU as 2x 8-pin power is required, the 6-pin will not be used... Yes, use 2 of them. Each cable connects one slot from PSU into one slot of your GPU. The remaining 6 pin on that cable just ignore. If you dont have enough cables, just buy some of these cable mods for EVGA PSU's. If you need more help, just open another thread especially for that problem. Its not really related to hashrate & co ![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
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solominer247
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May 19, 2019, 11:55:42 PM |
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Yes, use 2 of them. Each cable connects one slot from PSU into one slot of your GPU. The remaining 6 pin on that cable just ignore. If you dont have enough cables, just buy some of these cable mods for EVGA PSU's. If you need more help, just open another thread especially for that problem. Its not really related to hashrate & co ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) Sweet! I appreciate the support mate. Finally, I have managed to get 2x Radeon VII working, and yes it's stable on Nicehash. I'm using the following settings ; Core 950 mV, Power limit -10%, Core Clock 1750 MHz, Mem 1100 MHz, Fan Speed auto.DaggerHashimoto @ 0.179 GH/s ; 89 Mh/s & 89 Mh/s GPU temperatures ; 103 degrees & 105 degress The only worrying thing now is the temperature. I've read on this thread from post temp hits 89-91. But mine they are all 100+ , should I be worried or is that normal?
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pbfarmer
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May 20, 2019, 01:06:49 AM Last edit: September 18, 2019, 11:47:35 PM by mprep |
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Wouldn't four double PCIe cables mean you can connect four GPUs? Then use four of the remaining single ones for GPU 5 and 6?
Sorry, I'm getting confused with the cables, apologies. I've managed to connect 2x Radeon VII with 4 x 8-pin pcie cable. Now I have 5 of these : https://images.evga.com/products/gallery/100-CK-1300-B9_XL_4.jpg (I think its 6+2pin + 6pin connector) Yeah, the 1600 comes with all 6+2s, and 6/6+2s. Using the 6/6+2s on my vega 64s, I run the 6 to the riser, then split the 6+2 using this: https://www.amazon.com/gp/aw/d/B07611QXG4?psc=1&ref=ppx_pop_mob_b_asin_titleJust make sure you get the pcie splitter version (and double check the wiring when you get them) - there are similar products which are wired for the cpu cables, and will cause problems. One thing to note - while I’ve been running these for 1.5 yrs no problem, I don’t run my Vegas over 200w (I also have a seasonic PSU that suggests not running more than 225w through a single 6/6+2). You’ll likely be pulling more power w/ the vii, but technically the EVGA cables should be able to handle it. The pins should be rated @ 11a, (or 8a at the very least), while I believe the cabling is 16g/13a (or again 18g/10a at least), which means a single pcie cable should be able to carry min 3 hots x 12v x 8a = 288w, or spec 3 x 12 x 11a = 396w. Obv the adapters are an unknown quality - but you can at least check the wire gauge, then monitor wire/connector temp - slightly warm to the touch is fine, hot - not so much. If you want something more reputable than these no-name Chinese adapters, I think you can get 1x8-2x8 splits from cablemod, but be prepared to pay for it.
Yes, use 2 of them. Each cable connects one slot from PSU into one slot of your GPU. The remaining 6 pin on that cable just ignore. If you dont have enough cables, just buy some of these cable mods for EVGA PSU's. If you need more help, just open another thread especially for that problem. Its not really related to hashrate & co ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) Sweet! I appreciate the support mate. Finally, I have managed to get 2x Radeon VII working, and yes it's stable on Nicehash. I'm using the following settings ; Core 950 mV, Power limit -10%, Core Clock 1750 MHz, Mem 1100 MHz, Fan Speed auto.DaggerHashimoto @ 0.179 GH/s ; 89 Mh/s & 89 Mh/s GPU temperatures ; 103 degrees & 105 degress The only worrying thing now is the temperature. I've read on this thread from post temp hits 89-91. But mine they are all 100+ , should I be worried or is that normal? I’m assuming that’s junction temp - and yes, that’s pretty hot. I believe you’ll start throttling just over 110c. My single vii runs at mid-70s junction around 70-80% fan, in a pretty tight atx enclosure w/ only middling exhaust, along w/ a 590 and a 8700k. Obv your second vii is putting out a bit more heat than my 590, but you’re also open-air, so it’s prob a wash. The main prob is your clocks/voltages. As I mentioned earlier - 90mh/s is pretty inefficient (meaning a lot of extra heat as well)
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poodle63
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May 20, 2019, 02:23:58 PM |
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Nicehash is okay, if you don't mind pretty high mining fees (5% for payouts less than 0.1BTC to external wallets). The higher fees are partly offset by the fact that their miner always finds the most profitable coin to mine. They had a huge hack two years ago, and they lost lots of bitcoin, and many (including me) lost some of my mining profits. However they've been slowly paying back miners for the lost money. The fact that they've been around for a while, and that they try to pay miners back and do the right thing is why I still trust them. It's an okay way to acquire Bitcoin. For lesser fees, I use Nanopool for Ethereum mining, and over the years I've had zero problems with them. You can then use an exchange with much lower fees to convert your mined Eth to Bitcoin. I like their clean interface, and you can see one of my miners (2x 1060, 2x R-VII) mining currently there: https://eth.nanopool.org/account/0xa63ffc523e284bfb4a09b46ed2336afe824c57ebI wouldn't run 4x Radeon VII's in the bedroom unless you have earplugs, or are a very deep sleeper. ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) Also, do you need to cool down your house with air conditioning units? Depending on the climate you live in, AC units can use heaps of electricity trying to cool down mining rigs, and that's why lots of miners choose to run them outside, in the garage or at the patio, for example. Unless you have free electricity, or live in a cold area where you want to warm up your house by mining, I wouldn't run them inside. Today, I finally ordered 6 x AMD Radeon VII, I've been planning for quite some time now. Fingers crossed it should be delivered tomorrow or Saturday, also ordered 2 x Asus GTX 1070 OC 8GB. So now my small rig contains: 6 x Asus GTX 1070 0C 8GB 6 X MSI AMD Radeon VII 16GB I think having all 6 Radeon VII in 1 rig will be a pain, plus alot of undervolt would be required. I will install 4 GPUs first, check the performance and add 1 GPU at a time if possible. Yeah, I heard about the Nicehash hack. I was affected not much but still, now their making good progress reimbursed more than 50% already. They're also working on Nicehash v3, I think. My current rig has 5 x 120mm fans already installed which is running 4 x Asus GTX 1070 0C 8GB. It keeps the rig very cool and working great. After installing the 2nd rig, if more fans are required I could always purchase : https://www.amazon.co.uk/Oypla-Electrical-Chrome-Standing-Hydroponic/dp/B0182K76UQ/ref=sr_1_4?keywords=gym+fan&qid=1558040716&s=gateway&sr=8-4 , now these suckers are powerful! What makes you decide to order VII? i have a mining rig (3x 1070) and i wanna add more but i have some choices like 1060, add more 1070 or VII. but after doing some research and i got the fact what the power draw for VII is doubled from how much consumed by 1060 and 1070. Is there a reason for that? VII has a lower core clock too. Double the power draw with 3 times the eth hashing power of a 1070. It all comes down to efficiency in the coin you want to mine. Especially if you have higher power costs. 1070's are pretty efficient in Ethereum though. Someone ought to do testing and comparison with X16R or CN-R. I can test 1060 and VII (those are all I got). I've already created a efficiency comparison on Ethash, but I could probably cook up a table on the other algos. But i just aware if VII has tripled result on the hashrate power that already generated to mine ethereum use ethhash. But that's enough and interesting, i will try to get some VII and try to create a comparison. Honestly, i wanna try to add more GPu and im feeling confused to choose which is better but im missing it if VII has more hash rate even it consumes doubled on its electricity compared with NVIDIA 1k series
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..Stake.com.. | | | ▄████████████████████████████████████▄ ██ ▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄ ██ ▄████▄ ██ ▀▀▀▀▀▀▀▀▀▀ ██████████ ▀▀▀▀▀▀▀▀▀▀ ██ ██████ ██ ██████████ ██ ██ ██████████ ██ ▀██▀ ██ ██ ██ ██████ ██ ██ ██ ██ ██ ██ ██████ ██ █████ ███ ██████ ██ ████▄ ██ ██ █████ ███ ████ ████ █████ ███ ████████ ██ ████ ████ ██████████ ████ ████ ████▀ ██ ██████████ ▄▄▄▄▄▄▄▄▄▄ ██████████ ██ ██ ▀▀▀▀▀▀▀▀▀▀ ██ ▀█████████▀ ▄████████████▄ ▀█████████▀ ▄▄▄▄▄▄▄▄▄▄▄▄███ ██ ██ ███▄▄▄▄▄▄▄▄▄▄▄▄ ██████████████████████████████████████████ | | | | | | ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ █ ▄▀▄ █▀▀█▀▄▄ █ █▀█ █ ▐ ▐▌ █ ▄██▄ █ ▌ █ █ ▄██████▄ █ ▌ ▐▌ █ ██████████ █ ▐ █ █ ▐██████████▌ █ ▐ ▐▌ █ ▀▀██████▀▀ █ ▌ █ █ ▄▄▄██▄▄▄ █ ▌▐▌ █ █▐ █ █ █▐▐▌ █ █▐█ ▀▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▀█ | | | | | | ▄▄█████████▄▄ ▄██▀▀▀▀█████▀▀▀▀██▄ ▄█▀ ▐█▌ ▀█▄ ██ ▐█▌ ██ ████▄ ▄█████▄ ▄████ ████████▄███████████▄████████ ███▀ █████████████ ▀███ ██ ███████████ ██ ▀█▄ █████████ ▄█▀ ▀█▄ ▄██▀▀▀▀▀▀▀██▄ ▄▄▄█▀ ▀███████ ███████▀ ▀█████▄ ▄█████▀ ▀▀▀███▄▄▄███▀▀▀ | | | ..PLAY NOW.. |
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heavyarms1912
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May 20, 2019, 06:12:06 PM |
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Nicehash is okay, if you don't mind pretty high mining fees (5% for payouts less than 0.1BTC to external wallets). The higher fees are partly offset by the fact that their miner always finds the most profitable coin to mine. They had a huge hack two years ago, and they lost lots of bitcoin, and many (including me) lost some of my mining profits. However they've been slowly paying back miners for the lost money. The fact that they've been around for a while, and that they try to pay miners back and do the right thing is why I still trust them. It's an okay way to acquire Bitcoin. For lesser fees, I use Nanopool for Ethereum mining, and over the years I've had zero problems with them. You can then use an exchange with much lower fees to convert your mined Eth to Bitcoin. I like their clean interface, and you can see one of my miners (2x 1060, 2x R-VII) mining currently there: https://eth.nanopool.org/account/0xa63ffc523e284bfb4a09b46ed2336afe824c57ebI wouldn't run 4x Radeon VII's in the bedroom unless you have earplugs, or are a very deep sleeper. ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) Also, do you need to cool down your house with air conditioning units? Depending on the climate you live in, AC units can use heaps of electricity trying to cool down mining rigs, and that's why lots of miners choose to run them outside, in the garage or at the patio, for example. Unless you have free electricity, or live in a cold area where you want to warm up your house by mining, I wouldn't run them inside. Today, I finally ordered 6 x AMD Radeon VII, I've been planning for quite some time now. Fingers crossed it should be delivered tomorrow or Saturday, also ordered 2 x Asus GTX 1070 OC 8GB. So now my small rig contains: 6 x Asus GTX 1070 0C 8GB 6 X MSI AMD Radeon VII 16GB I think having all 6 Radeon VII in 1 rig will be a pain, plus alot of undervolt would be required. I will install 4 GPUs first, check the performance and add 1 GPU at a time if possible. Yeah, I heard about the Nicehash hack. I was affected not much but still, now their making good progress reimbursed more than 50% already. They're also working on Nicehash v3, I think. My current rig has 5 x 120mm fans already installed which is running 4 x Asus GTX 1070 0C 8GB. It keeps the rig very cool and working great. After installing the 2nd rig, if more fans are required I could always purchase : https://www.amazon.co.uk/Oypla-Electrical-Chrome-Standing-Hydroponic/dp/B0182K76UQ/ref=sr_1_4?keywords=gym+fan&qid=1558040716&s=gateway&sr=8-4 , now these suckers are powerful! What makes you decide to order VII? i have a mining rig (3x 1070) and i wanna add more but i have some choices like 1060, add more 1070 or VII. but after doing some research and i got the fact what the power draw for VII is doubled from how much consumed by 1060 and 1070. Is there a reason for that? VII has a lower core clock too. Double the power draw with 3 times the eth hashing power of a 1070. It all comes down to efficiency in the coin you want to mine. Especially if you have higher power costs. 1070's are pretty efficient in Ethereum though. Someone ought to do testing and comparison with X16R or CN-R. I can test 1060 and VII (those are all I got). I've already created a efficiency comparison on Ethash, but I could probably cook up a table on the other algos. But i just aware if VII has tripled result on the hashrate power that already generated to mine ethereum use ethhash. But that's enough and interesting, i will try to get some VII and try to create a comparison. Honestly, i wanna try to add more GPu and im feeling confused to choose which is better but im missing it if VII has more hash rate even it consumes doubled on its electricity compared with NVIDIA 1k series 90-100 Mhs on Vii is possible not sweet spot in efficiency. 75 Mhs might be looking at sweet spot.
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rednoW
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May 21, 2019, 05:10:53 AM |
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90-100 Mhs on Vii is possible not sweet spot in efficiency.
75 Mhs might be looking at sweet spot.
I've got 82mhs with lowest 850mv voltage I was able to set. (~200watt) Do you have lower voltage so your clocks are lower and hash is only 75? What is the wattage? I'm keeping the strategy "take the max clock from the min voltage", so I never run the card with lower gpu clock that it can handle with given voltage.
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solominer247
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May 21, 2019, 12:22:34 PM Last edit: May 21, 2019, 12:50:46 PM by solominer247 |
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It's been almost 2 days since I had the gpus. Progress is being made, I started with the rig running at very high temperature, around 105 Celsius. After, hours of tweaking and testing I have managed to reduce the "Junction" temperature drastically.
If you're using Afterbuner for overclocking/underclocking remember with the Radeon VII there will be two temperature to monitor :
GPU1 Temperature GPU1 Temperature 2 (Junction temp) Always remember "Junction" temp is very important as this is the temp inside the gpu, this must not exceed more than 90ish Celsius if you want the units to have longevity.
Using the settings below, I've been able to reduce temp from 105 Celsius to 80-82 Celsius which I think is huge improvement.
70% fan, 1600 core, 865 mV, 1000 memory, Power Limit -20
The above settings should give your gpus ; 70 C GPU and 80 Junction and around 900 watts
Average Mh/s @ 82
Remember my watts are based on 4 GPUs
What do you guys think about running gpus around 80 Celsius, is that too high?
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pbfarmer
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May 21, 2019, 05:31:07 PM |
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It's been almost 2 days since I had the gpus. Progress is being made, I started with the rig running at very high temperature, around 105 Celsius. After, hours of tweaking and testing I have managed to reduce the "Junction" temperature drastically.
If you're using Afterbuner for overclocking/underclocking remember with the Radeon VII there will be two temperature to monitor :
GPU1 Temperature GPU1 Temperature 2 (Junction temp) Always remember "Junction" temp is very important as this is the temp inside the gpu, this must not exceed more than 90ish Celsius if you want the units to have longevity.
Using the settings below, I've been able to reduce temp from 105 Celsius to 80-82 Celsius which I think is huge improvement.
70% fan, 1600 core, 865 mV, 1000 memory, Power Limit -20
The above settings should give your gpus ; 70 C GPU and 80 Junction and around 900 watts
Average Mh/s @ 82
Remember my watts are based on 4 GPUs
What do you guys think about running gpus around 80 Celsius, is that too high?
Junction temp is the max of all sensors. The gpu will start throttling around 110c, so really that is the threshold AMD considers ‘safe’, not 90. That being said, lower temp = longer lifespan. I’m uncomfortable w/ 80c, but these guys run hot - without drastically reducing performance, or altering the cards cooling solution, it is what it is.
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deskless
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May 21, 2019, 05:58:35 PM |
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It's been almost 2 days since I had the gpus. Progress is being made, I started with the rig running at very high temperature, around 105 Celsius. After, hours of tweaking and testing I have managed to reduce the "Junction" temperature drastically.
If you're using Afterbuner for overclocking/underclocking remember with the Radeon VII there will be two temperature to monitor :
GPU1 Temperature GPU1 Temperature 2 (Junction temp) Always remember "Junction" temp is very important as this is the temp inside the gpu, this must not exceed more than 90ish Celsius if you want the units to have longevity.
Using the settings below, I've been able to reduce temp from 105 Celsius to 80-82 Celsius which I think is huge improvement.
70% fan, 1600 core, 865 mV, 1000 memory, Power Limit -20
The above settings should give your gpus ; 70 C GPU and 80 Junction and around 900 watts
Average Mh/s @ 82
Remember my watts are based on 4 GPUs
What do you guys think about running gpus around 80 Celsius, is that too high?
What miner are you running? Also, are you using Windows OS or some other mining os such as minerstat?
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heavyarms1912
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May 21, 2019, 06:56:05 PM |
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90-100 Mhs on Vii is possible not sweet spot in efficiency.
75 Mhs might be looking at sweet spot.
I've got 82mhs with lowest 850mv voltage I was able to set. (~200watt) Do you have lower voltage so your clocks are lower and hash is only 75? What is the wattage? I'm keeping the strategy "take the max clock from the min voltage", so I never run the card with lower gpu clock that it can handle with given voltage. Check on your core volt. setting it at 850mV doesn't actually make the card run at 850mV. Hwinfo would report something else. It's tied to memory clocks/voltage too. If you're running at 1000 Mhz+ especially. To get good mhs outta vii the core needs to bumped up and vii loses efficiency.
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