What is considered as max "safe" 24/7 voltage for 5870?
Cooling is not an issue, 34c in furmark at 1,2v 1ghz.
Is 1,35v okay? Perhaps even 1,4v?
What is considered as max "safe" 24/7 voltage for 5870?
Cooling is not an issue, 34c in furmark at 1,2v 1ghz.
Is 1,35v okay? Perhaps even 1,4v?
Project TJ07 WeeMaan edition in progress...
i7 920 @ 4,4ghz, P6T Deluxe, Corsair Dominator 6Gb, HD5870, OCZ Vertex 60gb + Samsung F1 1tb
Heatkiller copper, EK 5870, Thermochill 120.4, DDC 3.2
There's no such thing as a safe voltage other than stock voltage. Go as high as you dare or as high as you think temps are ok.
For 24/7 usage i would just use stock voltage, only for benching i'd go higher. As high as my cooling can take and as long as there is still scaling with voltage.
Asus Crosshair V Formula-Z | FX 8350 | 2x4GB Trident-X 2600 C10 | 2x ATI HD5870 Crossfire | Enermax Revo 1050watt | OCZ Vertex 3 60GB | Samsung F1 1TB
Watercooling: XSPC Raystorm | EK 5870 Delrin fullcover | TFC X-changer 480 w/ 4x Gentle Typhoon | DDC2+ Delrin top | EK 200mm res | Primochill LRT 3/8 tubing
Case: Murdermodded TJ-07
sub 9 sec. SPi1M 940BE 955BE 965BE 1090T
I think up to 1.35v is fine as long as the temperatures dont go to high, and since overclocking software supports up to that voltage.
The gains over 1 Ghz arent usually worth the extra required voltage, eg my cards manage 1000 Mhz @ 1.225v, but to get up to 1050 Mhz artifact free, I need to push the voltage to over 1.3v and keep the temperatures under 75 degrees.
I would only go higher for benchmark runs, but for 24/7 use, stick to around 1.2v and 1000 Mhz. I suggest keeping the temperature below 85 degrees.
My new bench 5870@1055/1320
http://www.imagebanana.com/img/q56424ho/VP1055.1320.jpg
Last edited by kasper93; 03-16-2010 at 09:21 AM.
I've just put an EK fullcoverblock (nickel/acetal) on both my 5870's and temps are fantastic! One card idles at 27ºC, the other one at 29ºC. A full run of 3d mark 06 only heats them up to 31-32ºC! VRM temps are also very good.
I was able to do 3d mark06 at 1020MHz w/1.237V. Me happy? H3ll yeah!
Asus Crosshair V Formula-Z | FX 8350 | 2x4GB Trident-X 2600 C10 | 2x ATI HD5870 Crossfire | Enermax Revo 1050watt | OCZ Vertex 3 60GB | Samsung F1 1TB
Watercooling: XSPC Raystorm | EK 5870 Delrin fullcover | TFC X-changer 480 w/ 4x Gentle Typhoon | DDC2+ Delrin top | EK 200mm res | Primochill LRT 3/8 tubing
Case: Murdermodded TJ-07
sub 9 sec. SPi1M 940BE 955BE 965BE 1090T
hmmm I just installed the same block.
here's where I'm at... this is a xfx 5850 XXX edition.
Any idea why my VRM temps would be so high? Also the GPU is getting up there at 53C. Maybe I didnt tighten the block down hard enough.
Are you using the thermal pads and the standoffs? I read in the EK thread that VRM temps should be better running without the pads.
Hi guys
I'am having trouble with Afterburner and vista-64 bit. After i edit the file that enableenofficialoverclocking from 0 to a 1 .Then try to do a over clock in afterburner it crash my pc every time . Got any ideas ? or i'am just a dum ass.
Phenom II 965 C3 @ 4 Mhz @1.4375v prime95 stable
Asus CrossHair III Formula
Cooler Master Aquagate Max cpu cooler
Patriot AMD Black ED. ddr3-1333 OC 1600 8-8-8-20-28 (2x2GB)
2600NB@1.350v 2200HT@1.206v
2 Asus 5850s running in crossfire
2 WD 320gig SATA-2 hard drives raid-0
PC Power & Cooling 750w Silencer Crossfire ED.
Asus DVD Burner
Cooler Master HAF932 AMD Limited ED. case
Acer 21.5" LCD 1920x1080P
windows 7-64 bit
I got that and after some googling i found a solution. Right click the msi afterburner.exe and choose it to run as "Windows Xp SP 3" compatibility. Solved it for me.
However that dident solve my problem :p The thing is i have the well known flickering-when-more-than-one-screen and i tried to solve this by modifiying my asus bios and lower powerplay and standard clock to 550 / 900 ( I get some minor flickering when i leave standard clock at 725 / 1000 ) But when i do this my maximum overclocking capability decreases to 825 instead of 1090. Tried reflashing serveral times but i cant seem to find a solution to this. Any tips?
( I use the Unlocked Asus bios as base. Dont know if it matters but i have two 5850 in crossfire. )
both my 5870's are sitting at 1GHZ core, 1.3GHZ mem with 1.250 volts.
Intel Core i7 4770K @ 4.6ghz| Corsair H100i | MSI Z87-GD65 Gaming Edition | 16GB Corsair Vengeance @ 2.4GHZ | eVGA GTX 780 | Creative Sound Blaster ZxR | Samsung 500GB SSD/4TB Storage | LG 14X BLu-Ray Burner | Corsair HX1050 | Corsair Air 540 | Asus VG248QE 144HZ Monitor
Asus Crosshair V Formula-Z | FX 8350 | 2x4GB Trident-X 2600 C10 | 2x ATI HD5870 Crossfire | Enermax Revo 1050watt | OCZ Vertex 3 60GB | Samsung F1 1TB
Watercooling: XSPC Raystorm | EK 5870 Delrin fullcover | TFC X-changer 480 w/ 4x Gentle Typhoon | DDC2+ Delrin top | EK 200mm res | Primochill LRT 3/8 tubing
Case: Murdermodded TJ-07
sub 9 sec. SPi1M 940BE 955BE 965BE 1090T
Ati 5850 + i5 Vantage
Last edited by alyns; 03-17-2010 at 11:35 AM.
update for me :
new power supply fixed my problems
cpu stable again at 4 GHz with acceptable voltage too, passed 4 linx runs with all my ram and i stopped it there, took long enough and thought it was good enough, previous power supply wouldn't even get me through windows login with the same voltages, +0.1 bluescreened during first pass with high temperatures so i gave up there
finished vantage now with settings i'll use 24/7, will do a run again later to see just how high the card can go at 100% fanspeed
System 1 (mine):
CPU: i7 920 D0 stable at 4.0 GHz cooled by Scythe Mugen 2000
GPU: PowerColor HD5850 (950/1250 1.2V)
Motherboard: Gigabyte GA-EX58-UD5 Memory: 6GB DDR3 GeiL @ 1528 MHz
System 2 (gf's):
CPU: i7 920 D0 currently at 4.2 GHz cooled by Noctua NH-D14 (needs more tweaking/testing)
GPU: Club3D HD5850 (awaiting OC)
Motherboard: Gigabyte GA-EX58-UD3R Memory: 6GB DDR3 Corsair @ 1600 MHz
figured out my problem on bad company 2.
Had to raise IOH, IOH/ICH , ICH up several settings. This applied to me as i'm running crossfire and read that it helps greatly to prevent BSOD from video driver/card. It also tends to improve performance. I read this in one of the i7 overclocking guides
everything works fine now
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Laptop- ASUS G50V-A2@3GHz w/2gb RAM G.Skill
Car: 01 T/A WS6 http://www.ls1tech.com/forums/showthread.php?t=631954
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Thanks.
Asus Crosshair V Formula-Z | FX 8350 | 2x4GB Trident-X 2600 C10 | 2x ATI HD5870 Crossfire | Enermax Revo 1050watt | OCZ Vertex 3 60GB | Samsung F1 1TB
Watercooling: XSPC Raystorm | EK 5870 Delrin fullcover | TFC X-changer 480 w/ 4x Gentle Typhoon | DDC2+ Delrin top | EK 200mm res | Primochill LRT 3/8 tubing
Case: Murdermodded TJ-07
sub 9 sec. SPi1M 940BE 955BE 965BE 1090T
Quick run this morning. Not too shabby. I need to squeeze out the additional ~60 pts or so for 21K on GPU alone.
Vantage (P) setting...
And an 06 run from this morning...
Last edited by dejanh; 03-18-2010 at 10:43 AM.
My HeatWare: http://www.heatware.com/eval.php?id=70151
installed 10.3 and bumped up core & ram a bit higher, i'm stopping here, temperatures are going too high for my liking and i want to keep the card in one piece for now
*UPDATE*
Added my "old" 8800GT as physx
Last edited by Dahmer; 03-19-2010 at 02:00 PM.
System 1 (mine):
CPU: i7 920 D0 stable at 4.0 GHz cooled by Scythe Mugen 2000
GPU: PowerColor HD5850 (950/1250 1.2V)
Motherboard: Gigabyte GA-EX58-UD5 Memory: 6GB DDR3 GeiL @ 1528 MHz
System 2 (gf's):
CPU: i7 920 D0 currently at 4.2 GHz cooled by Noctua NH-D14 (needs more tweaking/testing)
GPU: Club3D HD5850 (awaiting OC)
Motherboard: Gigabyte GA-EX58-UD3R Memory: 6GB DDR3 Corsair @ 1600 MHz
I had this problem and had to disable ULPS (the new powerplay feature for crossfire in the newer drivers - 10.2+) this just makes the second card go to sleep in 2D mode to 0mhz instead of the normal 2D clocks.
instructions here - http://www.xtremesystems.org/forums/...&postcount=100
Cooling: Dice
voltage: 1.38v
Will add water numbers in the next day or so... those are a bit more useful to more people....
Im looking at ~ 1080MHz @ 1.25v
@ K404:
Really nice!
I'd be curious about the mods also!
Hey Thanks!
Just a simple vCore hardmod. Couple pics in the Xtreme3D section.
Will be a couple days before I can get water numbers. Benching again tomorrow, so everythings set up for that
|RIIIE||Xeon W3520#3845A935|EVGA GTX480||PC3 16000 Kingston HyperX 6GB||2x150GB WD VRaptor||WD6401AALS||HAF 932//CM 1250W||LenovoL220x||X-Fi Xtreme Music||Lycosa+Lachesis+Destructor+G27+P880|
WC-Loop1: CPU |EK-Supreme HF|Magicool Xtreme III||MCP355||MCRES| Loop2: VGA/NB| EK-FC480 GTX-Acetal / MCW30|MCP655|MCR220QP|MCRES|
This is my most stable clock, havent really tinkered with memory, might get a few more MHz which increases score, but 1343 got higher score than 1350 so I just used that
Havent tried more than 1.35 as thats what MSI Afterburner allows and I cant push Core past 1045 so I need more juice temps not high anyway wiht 100% fanspeed and extra fan at exaust and intake.
Do I need another bios to get more than 1.35 from MSI afterburner?
1045
1343
P Vantage = 23096 (Top 100 Hurray)
P Vantage GPU = 21807
http://hwbot.org/community/submissio...70_23096_marks
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