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vrm86
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January 19, 2014, 05:34:33 PM |
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I set up an domestic ~30cm fan for my 3* R9280X rig, because there is weak ventillation in the place where it stands. For cost of 0,7 kWh/day i have nice 70-72 C temps  It will become even more important, when I install 4th GPU soon. |
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"You Asked For Change, We Gave You Coins" -- casascius
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awais3344 (OP)
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January 22, 2014, 08:50:53 AM |
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I set up an domestic ~30cm fan for my 3* R9280X rig, because there is weak ventillation in the place where it stands. For cost of 0,7 kWh/day i have nice 70-72 C temps It will become even more important, when I install 4th GPU soon. i have same gpus with a fan good  |
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NEOSCOIN +POD Developers +Active Community - V2 Coming Soon! Live In-App Trading, Live Pool Stats - IRC - Arbitrush Anonymous System soon!! NEOSCOIN
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Amph
Legendary
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Activity: 3206
Merit: 1069
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January 22, 2014, 08:57:45 AM |
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flash the bios, the vcore is probably too high
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paniczklos
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January 22, 2014, 09:01:57 AM |
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I have 730khs stable - 70 degC - fan at 2000rpm ( it's like 20% - so it's silent).
GPU clock 1035 MHz
Memory - default
Voltage - lowered to 1.1V ( and powertune -20 )
Card is Sapphire R9 280X dual-x OC
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tozak
Member
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Activity: 103
Merit: 10
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January 22, 2014, 09:11:59 AM |
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Just got the exact same card and has been mining flawlessly now at 712Kh/s for well over 2 hours (cover off PC, no additional fans)
Seems to be a good card for $:hash
Running at default settings but using "--thread-concurrency 8192 -g 2 -w 256 -I 13" on 3.7.2
Very happy so far, not going to OC it any further as I'm NOT running it in an 24/7 AC room
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Minerz
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January 22, 2014, 09:43:14 AM |
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My Sapphire 280x gives 675Khs.I can get more,but heat and wattage goes up and its not worth 35Khs.My temps are 75C,yours are fine.Close to 90C and maybe more is something to worry about.
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james6546
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January 22, 2014, 10:08:09 AM |
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I manage 755k on my Sapphire 280x Toxic, at 73C with:
--gpu-vddc 1.2 -I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-engine=1089 --gpu-memclock=1500 --auto-fan
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awais3344 (OP)
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January 22, 2014, 11:02:13 AM |
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why do all same gpus have different hashing speeds.
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NEOSCOIN +POD Developers +Active Community - V2 Coming Soon! Live In-App Trading, Live Pool Stats - IRC - Arbitrush Anonymous System soon!! NEOSCOIN
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james6546
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January 22, 2014, 11:04:52 AM |
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why do all same gpus have different hashing speeds.
Not entirely sure, I think it has something to do with the quality of the ASIC chip that is installed |
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SheepOnDrugs
Member
Offline
Activity: 112
Merit: 10
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January 22, 2014, 12:34:51 PM |
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You should get over 700 with every 280x though.
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erre
Legendary
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Activity: 1666
Merit: 1205
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January 22, 2014, 12:41:37 PM |
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Over 70 °C, my xfx 280x start throtthling (core go up-down from the settled value to 510).
Sholud i flash the bios? I don't have windows, no way to do it on linux?
Where can i find proper tested bios?
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erre
Legendary
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Activity: 1666
Merit: 1205
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January 22, 2014, 01:04:13 PM |
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Thank you for this fantastic clue. But i don't know how to properly set the bios, plus by a brief look cannot locate the bios switch on my cards... can't i find a proper bios online?
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SheepOnDrugs
Member
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Activity: 112
Merit: 10
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January 22, 2014, 01:06:05 PM |
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Everythings explained there.
You download VBE7 and there you can choose your settings in drop down windows.
Also if you can't locate a BIOS switch your GPU only has 1 BIOS.
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erre
Legendary
Offline
Activity: 1666
Merit: 1205
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January 22, 2014, 02:25:23 PM |
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yep, but i have to mess with vram temperatures right?
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RD965
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December 07, 2014, 09:28:36 AM |
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yep, but i have to mess with vram temperatures right?
You always do, vram is normally the problematic part of the card, since its not usually cover by the cooling system on the card (in some cards it is, such as any Tri-x edition) If your hashrate jumps down due to temps, its normally vram  |
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RD965
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December 07, 2014, 12:08:16 PM |
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yep, but i have to mess with vram temperatures right?
You always do, vram is normally the problematic part of the card, since its not usually cover by the cooling system on the card (in some cards it is, such as any Tri-x edition) If your hashrate jumps down due to temps, its normally vram Wow, you bumped a really old thread. Anyway, no one mines Scrypt on GPUs anymore  Its nice to remember old times tho Neoscrypt is kikin'  |
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RD965
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December 07, 2014, 09:17:27 PM |
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yep, but i have to mess with vram temperatures right?
You always do, vram is normally the problematic part of the card, since its not usually cover by the cooling system on the card (in some cards it is, such as any Tri-x edition) If your hashrate jumps down due to temps, its normally vram Wow, you bumped a really old thread. Anyway, no one mines Scrypt on GPUs anymore Its nice to remember old times tho Neoscrypt is kikin' Hell yes it is. Got my 280X doing 420kh/s on Neoscrypt. Can you share settings please? Im on windows 8.1 pro latest drivers and a r9 280x as well running on cgminer, so far y just got 75kh... |
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RD965
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December 07, 2014, 10:18:16 PM |
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yep, but i have to mess with vram temperatures right?
You always do, vram is normally the problematic part of the card, since its not usually cover by the cooling system on the card (in some cards it is, such as any Tri-x edition) If your hashrate jumps down due to temps, its normally vram Wow, you bumped a really old thread. Anyway, no one mines Scrypt on GPUs anymore Its nice to remember old times tho Neoscrypt is kikin' Hell yes it is. Got my 280X doing 420kh/s on Neoscrypt. Can you share settings please? Im on windows 8.1 pro latest drivers and a r9 280x as well running on cgminer, so far y just got 75kh... It's not my settings - I've edited the kernel more. Cmon thats a huge change! I should be able to get 200 at least right? |
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RD965
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December 08, 2014, 10:17:55 AM |
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yep, but i have to mess with vram temperatures right?
You always do, vram is normally the problematic part of the card, since its not usually cover by the cooling system on the card (in some cards it is, such as any Tri-x edition) If your hashrate jumps down due to temps, its normally vram Wow, you bumped a really old thread. Anyway, no one mines Scrypt on GPUs anymore Its nice to remember old times tho Neoscrypt is kikin' Hell yes it is. Got my 280X doing 420kh/s on Neoscrypt. Can you share settings please? Im on windows 8.1 pro latest drivers and a r9 280x as well running on cgminer, so far y just got 75kh... It's not my settings - I've edited the kernel more. Cmon thats a huge change! I should be able to get 200 at least right? Yeah, probably - depending on driver version. Cmon im asking for help here |
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