Claymore's ZCash/BTG AMD GPU Miner v12.6 (Windows/Linux)

[Golku]

The maximum that I have seen on my 280x and 7970 was 250 h/s. How can I get 290 h/s? Do a modified BIOS provides significant increase?

on stock bios max is 260H/s on 7970 and 280x. If you want to near 290H/s from tahiti, hack bios, but don't forget to make a backup 

my stock 280x was like 245
strapped 280x i get like 266
is it because elpida memory ?
running at 1020 clock and 1500 memory

[1715288000]

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[1715288000]

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[jenia1]

Same for me 260-265 H/s stock no bios mod

Guys. how much H/s you get with your RX 480 8GB?

Latest version give me 260 H/s. Bios not modded.

That's the same H/s for my RX480s.

For ref. RX470 4GB, stock bios, -i 6, CZM 11.1, I got ~232-240H/s.

thats the thing.... im getting the same Hash as you but my bios is modded - 1700 strap is copied to 2000, and i use 16.11.4 . when mining ETH i have higher hash, but on the Zcash it seems to have no effect. anyone knows why?

[fronder59]

on my 7970 I have 298H/s with 1100/1575, and it works without crash
but i can't improve my Sapphire 280x Tri-X OC to this results, I have only 286H/s in stable. What clocks are you used?
p.s. timings are 1250MHz

Strange I tried to mod bios, but i did not achieve any increase in performance. Maybe you could share your bios domp of 280x? atm i get 245-260h/s

For save you card alive you must edit your stock bios file. Bios from another model of card can make a problem, or even brick card. There is a automatic patch to Tahiti.rom files, but it don't help me, because card pump to +500H/s and almost all shares was rejected)) May be it help you))

[Etherion]

My rig show only GPU0 and GPU1 temp and fan, i have 2x 7990, under win 10, already tried all from catalyst 15.12 to 17.1(used ddu), tried all sort of config command(-asm 0, -tt 75,75,75,75 -wd 0).
I'm worried because i used the command -ttli and -tstop to protect the rig, but that seems to affect only gpu0 and gpu1, already see gpu2 and gpu3 get to 100 celsius....
Already tried miner 10.0,11.0 and 11.1
Any tips?

I had the same when I connect using Remote desktop Connect. When I connect after reboot with teamviewer or use a screen it was fine. but if i use windows RDC it gave the temp not reporting

[fronder59]

The maximum that I have seen on my 280x and 7970 was 250 h/s. How can I get 290 h/s? Do a modified BIOS provides significant increase?

on stock bios max is 260H/s on 7970 and 280x. If you want to near 290H/s from tahiti, hack bios, but don't forget to make a backup 
https://cdn-enterprise.discourse.org/zcash/uploads/default/original/2X/d/d1b4be861572ed8372b8de90baae2ff01851bb05.png

my stock 280x was like 245
strapped 280x i get like 266
is it because elpida memory ?
running at 1020 clock and 1500 memory

Yes, elpida memory little slower then hynix AFR. All my card have hynix AFR, and i don't now how to optimize elpida 
i'm running 1100/1575 and 1100/1500 are close to max H/s too

[balazarek]

The maximum that I have seen on my 280x and 7970 was 250 h/s. How can I get 290 h/s? Do a modified BIOS provides significant increase?

on stock bios max is 260H/s on 7970 and 280x. If you want to near 290H/s from tahiti, hack bios, but don't forget to make a backup 
https://cdn-enterprise.discourse.org/zcash/uploads/default/original/2X/d/d1b4be861572ed8372b8de90baae2ff01851bb05.png

I have 2x ASUS R9280X-DC2T-3GD5 and 1x Sapphire R9 280X TOXIC 3GB GDDR5. All of them has Hynix memory. How can I modify bios to significant increase hash rate ? Do you have any tutorial ? Thank you.

[samches]

on my 7970 I have 298H/s with 1100/1575, and it works without crash
but i can't improve my Sapphire 280x Tri-X OC to this results, I have only 286H/s in stable. What clocks are you used?
p.s. timings are 1250MHz

Strange I tried to mod bios, but i did not achieve any increase in performance. Maybe you could share your bios domp of 280x? atm i get 245-260h/s

For save you card alive you must edit your stock bios file. Bios from another model of card can make a problem, or even brick card. There is a automatic patch to Tahiti.rom files, but it don't help me, because card pump to +500H/s and almost all shares was rejected)) May be it help you))

I wanted to open your bios dump in Hex Editor, to check memory timings and compare with my moded bios. thank you.

[adaseb]

https://bitcointalk.org/index.php?topic=1676474.0

There are a few 7950 7970 280x bios mods in that thread. If your GPU is there try those. If not, please dont PM me to mod your GPU. No free time. Instructions on how to mod are included.

[Puffy23]

Hi,

I have a problem if I try to connect more than 6 GPUs to my AsRock H81 Pro BTC v2.0 mobo. I bought an extender riser (PCI-E x1 -> 3*PCI-E x1) and I use normal USB3 PCI-E x1->x16 risers. Everything's  fine until I connect the 7th card. I can connect the first 6 card any way I want it but after the 7th card connected I got blank screen when I turn on the rig.

How do I make it work with 7 or 8 cards?

are you using Windows 7 perhaps? I have an 8 Card system and the only way I got them to work was with Windows 10 and Ubuntu. But it can also be the fact that your MB don't support more than 6 PCIE cards. Have you tried connecting 5 cards and one dual card? such as 7990, 295x ? I have two 7990 and 4 other cards in my 8 card system. Not using the PCI Switch.

I use Win10, but I can't get to boot the OS. I turn on the rig and nothing happens. I don't have dual cards, I use RX470 GPUs.

Maybe AsRock H81 Pro BTC v2.0 mobo doesn't support more than 6 PCI-E devices? I tried to disable integrated audio, serial ports, etc. in the bios, then connected the 7th card but also didn't work.

I don't want to buy an expensive server/workstation mobo. Is there any chance to use 7 or 8 PCI-E devices? I searched for modded bios for this mobo but didn't find anything. Or it's the limit of the H81 chipset, not the bios?

Which PCIE slot are you connecting your 1x3 card into?

It is my understanding that each GPU requires a minimum of 1 PCIE lane/pipeline to transmit data.  That means you would have to plug the 1x3 card into a slot with at least 3 lanes/pipelines (in the real world that means a 4x, 8x, or 16x slot).  The H81 Pro BTC has a single 16x slot and five 1x slots.  You could only ever run the 1x3 card on the 16x slot.

If I'm wrong on this I am open to correction.  I've actually been wanting to play around with the exact setup you describe.

[ffthomas]

Hi,

I have a problem if I try to connect more than 6 GPUs to my AsRock H81 Pro BTC v2.0 mobo. I bought an extender riser (PCI-E x1 -> 3*PCI-E x1) and I use normal USB3 PCI-E x1->x16 risers. Everything's  fine until I connect the 7th card. I can connect the first 6 card any way I want it but after the 7th card connected I got blank screen when I turn on the rig.

How do I make it work with 7 or 8 cards?

are you using Windows 7 perhaps? I have an 8 Card system and the only way I got them to work was with Windows 10 and Ubuntu. But it can also be the fact that your MB don't support more than 6 PCIE cards. Have you tried connecting 5 cards and one dual card? such as 7990, 295x ? I have two 7990 and 4 other cards in my 8 card system. Not using the PCI Switch.

I use Win10, but I can't get to boot the OS. I turn on the rig and nothing happens. I don't have dual cards, I use RX470 GPUs.

Maybe AsRock H81 Pro BTC v2.0 mobo doesn't support more than 6 PCI-E devices? I tried to disable integrated audio, serial ports, etc. in the bios, then connected the 7th card but also didn't work.

I don't want to buy an expensive server/workstation mobo. Is there any chance to use 7 or 8 PCI-E devices? I searched for modded bios for this mobo but didn't find anything. Or it's the limit of the H81 chipset, not the bios?

Which PCIE slot are you connecting your 1x3 card into?

It is my understanding that each GPU requires a minimum of 1 PCIE lane/pipeline to transmit data.  That means you would have to plug the 1x3 card into a slot with at least 3 lanes/pipelines (in the real world that means a 4x, 8x, or 16x slot).  The H81 Pro BTC has a single 16x slot and five 1x slots.  You could only ever run the 1x3 card on the 16x slot.

If I'm wrong on this I am open to correction.  I've actually been wanting to play around with the exact setup you describe.

I used the 1->3 extender riser in the 6th PCI-E slot (which is an x1 slot) and the 3 cards worked fine on that extender. So I think it is a limitation of bios/chipset, or not enough IRQ available?

[Puffy23]

Hi,

I have a problem if I try to connect more than 6 GPUs to my AsRock H81 Pro BTC v2.0 mobo. I bought an extender riser (PCI-E x1 -> 3*PCI-E x1) and I use normal USB3 PCI-E x1->x16 risers. Everything's  fine until I connect the 7th card. I can connect the first 6 card any way I want it but after the 7th card connected I got blank screen when I turn on the rig.

How do I make it work with 7 or 8 cards?

are you using Windows 7 perhaps? I have an 8 Card system and the only way I got them to work was with Windows 10 and Ubuntu. But it can also be the fact that your MB don't support more than 6 PCIE cards. Have you tried connecting 5 cards and one dual card? such as 7990, 295x ? I have two 7990 and 4 other cards in my 8 card system. Not using the PCI Switch.

I use Win10, but I can't get to boot the OS. I turn on the rig and nothing happens. I don't have dual cards, I use RX470 GPUs.

Maybe AsRock H81 Pro BTC v2.0 mobo doesn't support more than 6 PCI-E devices? I tried to disable integrated audio, serial ports, etc. in the bios, then connected the 7th card but also didn't work.

I don't want to buy an expensive server/workstation mobo. Is there any chance to use 7 or 8 PCI-E devices? I searched for modded bios for this mobo but didn't find anything. Or it's the limit of the H81 chipset, not the bios?

Which PCIE slot are you connecting your 1x3 card into?

It is my understanding that each GPU requires a minimum of 1 PCIE lane/pipeline to transmit data.  That means you would have to plug the 1x3 card into a slot with at least 3 lanes/pipelines (in the real world that means a 4x, 8x, or 16x slot).  The H81 Pro BTC has a single 16x slot and five 1x slots.  You could only ever run the 1x3 card on the 16x slot.

If I'm wrong on this I am open to correction.  I've actually been wanting to play around with the exact setup you describe.

I used the 1->3 extender riser in the 6th PCI-E slot (which is an x1 slot) and the 3 cards worked fine on that extender. So I think it is a limitation of bios/chipset, or not enough IRQ available?

I have a meeting I need to run to but this thread I found may have some useful information in it.  I will keep digging when I get back as well.

https://forum.ethereum.org/discussion/5195/riser-1-to-3-pci-e-1x

Edit 1:

After reading through the above thread and taking a look at Intel's specs on the h81 and z87 it would appear that the max PCIE lanes through the h81 chipset is 6, whereas the z87 chipset can handle 8.  The 1x PCIE slots run through the chipset, but the 16x slot runs straight to the CPU. 

I would think that you could run 6 GPUs max through the chipset while running the remainder of your GPUs through the 16x slot using the CPUs remaining availability. In this scenario you could only ever use a 1x2 card in one of your 1x slots.  If you moved the 1x3 card to the 16x slot then you could run 5 GPU through the chipset and 3 (or more depending on CPU, driver, OS) through the 16x PCIE straight to the CPU.

But that doesn't seem to be your experience.  If you have the 1x3 card in the last 1x PCIE slot then the 7th card you plug in should be the 6th card running through the chipset.  Theoretically you should be able to run 7 cards with your setup, but not 8.  And you can't.

So I'm wondering, perhaps we have a bottleneck somewhere else?  Out of curiosity, what CPU are you using?

http://ark.intel.com/products/75013/Intel-Z87-Chipset

https://ark.intel.com/products/75016/Intel-H81-Chipset

[espressodelisi]

I am running 11.1 linux version for one day.

With version 10, I was having heat issues and using lockups so I had to downclock my GPUs. With version 11, heat dropped and hashrate increased. No problems so far.

Good job Claymore. Thank you.

[Etherion]

What is the sols of a typical RX470 4g?

[ghostfaceuk]

What is the sols of a typical RX470 4g?

My Sapphire RX 470 Nitro OC 4GB with stock clocks and bios is giving me about 230h/s (not at computer right now to give you an exact figure)

[fredeq]

I have a meeting I need to run to but this thread I found may have some useful information in it.  I will keep digging when I get back as well.

https://forum.ethereum.org/discussion/5195/riser-1-to-3-pci-e-1x

Edit 1:

After reading through the above thread and taking a look at Intel's specs on the h81 and z87 it would appear that the max PCIE lanes through the h81 chipset is 6, whereas the z87 chipset can handle 8.  The 1x PCIE slots run through the chipset, but the 16x slot runs straight to the CPU. 

I would think that you could run 6 GPUs max through the chipset while running the remainder of your GPUs through the 16x slot using the CPUs remaining availability. In this scenario you could only ever use a 1x2 card in one of your 1x slots.  If you moved the 1x3 card to the 16x slot then you could run 5 GPU through the chipset and 3 (or more depending on CPU, driver, OS) through the 16x PCIE straight to the CPU.

But that doesn't seem to be your experience.  If you have the 1x3 card in the last 1x PCIE slot then the 7th card you plug in should be the 6th card running through the chipset.  Theoretically you should be able to run 7 cards with your setup, but not 8.  And you can't.

So I'm wondering, perhaps we have a bottleneck somewhere else?  Out of curiosity, what CPU are you using?

http://ark.intel.com/products/75013/Intel-Z87-Chipset

https://ark.intel.com/products/75016/Intel-H81-Chipset

This seems like a reasonable explanation https://forum.ethereum.org/discussion/comment/65925/#Comment_65925
So its a hardware limit of memory being addressed.

[Etherion]

What is the sols of a typical RX470 4g?

My Sapphire RX 470 Nitro OC 4GB with stock clocks and bios is giving me about 230h/s (not at computer right now to give you an exact figure)

thanks

[Corerj]

The problem occur directly in windows 10, not remotely...

My rig show only GPU0 and GPU1 temp and fan, i have 2x 7990, under win 10, already tried all from catalyst 15.12 to 17.1(used ddu), tried all sort of config command(-asm 0, -tt 75,75,75,75 -wd 0).
I'm worried because i used the command -ttli and -tstop to protect the rig, but that seems to affect only gpu0 and gpu1, already see gpu2 and gpu3 get to 100 celsius....
Already tried miner 10.0,11.0 and 11.1
Any tips?

I had the same when I connect using Remote desktop Connect. When I connect after reboot with teamviewer or use a screen it was fine. but if i use windows RDC it gave the temp not reporting

[BitJunkie556]

So guys, I was wondering on a little more technical explanation on why the R9 280/x are so much faster at mining than the 380 series?

Is it kind of like with the RX 480 and R9 390, where (I believe) the 390 has much higher memory bus width so mines much better, even though in raw performance, the cards are very similar?

Is that the issue when comparing the 280 to the 380? Because as far as I know, in raw performance, the 380 should beat the 280 considerably, should it not? Likewise, my RX 480 beats my 390 in almost every game I test.

[ccccccc7]

My rig show only GPU0 and GPU1 temp and fan, i have 2x 7990, under win 10, already tried all from catalyst 15.12 to 17.1(used ddu), tried all sort of config command(-asm 0, -tt 75,75,75,75 -wd 0).
I'm worried because i used the command -ttli and -tstop to protect the rig, but that seems to affect only gpu0 and gpu1, already see gpu2 and gpu3 get to 100 celsius....
Already tried miner 10.0,11.0 and 11.1
Any tips?

7990 auto shutdown @ 104°C anyway but if your card is getting that hot you need to rise it out of the case.

If you are already using risers then you should apply new thermal paste because I have MSI 7990 mining stable @ 69°C

Much simpler to solve the cooling issue than your question.

[jenci]

Which PCIE slot are you connecting your 1x3 card into?

It is my understanding that each GPU requires a minimum of 1 PCIE lane/pipeline to transmit data.  That means you would have to plug the 1x3 card into a slot with at least 3 lanes/pipelines (in the real world that means a 4x, 8x, or 16x slot).  The H81 Pro BTC has a single 16x slot and five 1x slots.  You could only ever run the 1x3 card on the 16x slot.

If I'm wrong on this I am open to correction.  I've actually been wanting to play around with the exact setup you describe.

i plug the pcie switch card to pcie x1 slot on asus m4a78 motherboard. to x16 slot on mb plugged over usb riser r9 290. next 3x 290 plugget to pcie switch.
work fine more that 1 week on dualminer.