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AMD Radeon 6990 Club - Page 47

post #461 of 4103
Hey guys,

Just wondering, does the "ausum" switch actually do anything other than bump the default clocks? I seem to overclock just fine 1.25v @1000 core without it using ab.
post #462 of 4103
Quote:
Originally Posted by scubamp View Post
i can't measure VRM in GPU-Z 0.5.2 on the 6990. this is what i have...
Im pretty sure its one of the GPU temps.
post #463 of 4103
Quote:
Originally Posted by Levesque View Post
Also, 1400 on the 6990/6970 is often getting in the range of VRAM error correction, and sometimes slower then 1350. Alot of people that bench both sppeds have noticed that 1400 is often SLOWER then 1350... 1400-1500 is for e-peen only. I would lower the RAM speed to 1350, and try pushing your core clock ALOT more instead.

With a waterblock, you can go to 1.3v no problem. But don't go higher. Then, try raising the cores speed by 20 each time with Furmark working in the background. When you start seeing artifacts/flashing, lower your core clock by 5-10, or until the artifacts ''disappear'' or stop happening.

But before doing that, you have to monitor your VRMs temps closely with GPU-Z. If they go near or over 100 celsius, you have to back down a bit.



The important point here is the delta: difference between air in (ambiant) and water temp in your loop. With a CPU, we want a delta of 5 or 10 max. But with a GPU, it's alot less important, and could easily live with a higher delta. The delta is in fact alot more important for a CPU then it is for a GPU.
Ive had 950/1450 (93o on air) stable and 3Dmark11 of 13808, will try 1350 & see if n e higher.

with water cooling, ok its official Ive decided to do it mainly due to noise. critique my proposed purchases please! - all I need is waterblocks for CPu & VGA cards, pump, res, radiator, tubing, 1/4 nozzles, cross fire nozzles for 2-3 bay slots, and coolant. right?

& what about those all in one pump res and led display that fit all into a optical drive bay slot? are they too small to do a big system ?

Koolance hd6990 waterblock, Koolance hd6970 waterblock, & Swifttech H20-220 'edge' liquid cooling kit... anything else I should get? water additive for the kit coolant? also how I get the liquid in tubing to glow? thnks!! will post lots of questions on installation when doing it! never taken a graphics card apart b4
Edited by 3WYXFIRE - 4/2/11 at 10:52pm
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My X-Fire System
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i7 2600K @ 4.8Ghz 1.39v Gigabyte P67-UD5-B3 Sapphire 6990 & 6970 @ 930/1375 8GB G.Skill RipJawsX 1600 1.5v 
Hard DriveOptical DriveOSMonitor
120GB OCZ Vertex2 SSD, 1TB WD Caviar Blue Samsung 22xDVD Win7 64x EyeFInitY ... 3 x Viewsonic VX2439 24" LCD 
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post #464 of 4103
Just got my VisionTek 6990. Now just waiting on my Revo 120GB SSD & Asus Maximus (ETA April 15th).
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CYPrEMi
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post #465 of 4103
Everyone's getting there 6990's, And im still waiting for amazon to get my XFX 6990 back in stock This is what I get for trying to save alittle money
post #466 of 4103
Im really confused about buying a setup, threading adaptors, clamps, pipe nozzles, tube nozzles?.. which one do I need? or all ??
My X-Fire System
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i7 2600K @ 4.8Ghz 1.39v Gigabyte P67-UD5-B3 Sapphire 6990 & 6970 @ 930/1375 8GB G.Skill RipJawsX 1600 1.5v 
Hard DriveOptical DriveOSMonitor
120GB OCZ Vertex2 SSD, 1TB WD Caviar Blue Samsung 22xDVD Win7 64x EyeFInitY ... 3 x Viewsonic VX2439 24" LCD 
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i7 2600K @ 4.8Ghz 1.39v Gigabyte P67-UD5-B3 Sapphire 6990 & 6970 @ 930/1375 8GB G.Skill RipJawsX 1600 1.5v 
Hard DriveOptical DriveOSMonitor
120GB OCZ Vertex2 SSD, 1TB WD Caviar Blue Samsung 22xDVD Win7 64x EyeFInitY ... 3 x Viewsonic VX2439 24" LCD 
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post #467 of 4103
Quote:
Originally Posted by 3WYXFIRE View Post
Im really confused about buying a setup, threading adaptors, clamps, pipe nozzles, tube nozzles?.. which one do I need? or all ??
I would say go look at the XSPC Rasa 750 kit. I hope you can fit a RX360 size Rad somewhere on or in your case, Because that setup is going to make some heat Watercooling take's some work to get setup, But can be great once its setup right http://www.overclock.net/water-cooli...l#post11546996
post #468 of 4103
Thread Starter 
Quote:
Originally Posted by 7ranslucen7 View Post
Hey guys,

Just wondering, does the "ausum" switch actually do anything other than bump the default clocks? I seem to overclock just fine 1.25v @1000 core without it using ab.
You should use the AUSUM switch, because on BIOS 1, you will have throttling because of PowerTune!

**Really important read for everyone here*** This is well explained in Anand 6990 review, for those that want to read more about TDP, throttling, Powertune, and differences between BIOS 1 and BIOS 2 on the 6990.

BIOS 1 (default BIOS, non-OC) = TDP limit of 375W, and THROTTLING with PowerTune will occur if you go over that. There is automatic throttling that will kick in in Furmark, or if you go over the max TDP.

BIOS 2 (AUSUM or OC BIOS) = NO TDP LIMIT = NO THROTTLING = NO POWERTUNE! Major difference! So be really careful if you try to OC. Don't go over 1.3v and with a waterblock only.

So don't raise your voltage too much with stock air cooler or you will burn your card to dust! Just do this with a waterblock! Anand were able to reach a TDP of around 675w on OC BIOS!!!!!!

And that's a big advantage compared to the Nvidia 590, since that Nvidia card is full of OCP and throttling, even in games, at driver levels.

MUST read before you OC that card! Thread starter, you should put those links and pics in the first post!

http://www.anandtech.com/show/4209/a...le-card-king/4

http://www.anandtech.com/show/4209/a...e-card-king/18
Edited by Levesque - 4/3/11 at 6:24am
    
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i7-5930k @ 4.9  i7-3930k @ 5.1 (2nd rig) Asus Rampage V (X99) + Asus Rampage IV (2nd rig) 2X Nvidia 1080 Ti SLI watercooled 
GraphicsRAMRAMHard Drive
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Hard DriveHard DriveOptical DriveCooling
Samsung 850 Pro 250GB 3XSeagate 3TB LG Blu-ray writer 2X Quad-120 MCR420 
CoolingCoolingCoolingCooling
2X Triple-120 MCR320 + 1X Triple-120 Feser 2X Dual-120 XSPC RX240 32 Gentle Typhoon fans (mix of 3000 and 1850rpm) Reservoir 2X Koolance RP-452x2 with 4X MCP655 p... 
CoolingOSMonitorKeyboard
2X EK Supreme HF CPU waterblock Windows 10 Pro x64 Acer XB270HU IPS G-Sync 2440p (main rig) 3X 30'... CoolerMaster Masterkeys Pro S MX blue switch, C... 
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post #469 of 4103
Don't you find it irritating with such a large loop in such a small case?

Well played to you though, it looks very nice.
    
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post #470 of 4103
Does anybody here have a VisionTek 6990?
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Crucial M4 64GB Western Digital WD Blue 500GB Lite-On iHAS124 CD/DVD Burner Cooler Master Hyper 212 EVO (Pull Configuration) 
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Windows 7 Home Premium 64-Bit NEC MultiSync LCD1970VX NEC MultiSync LCD1970VX Filco Majestouch Black w/ Cherry MX Blue (JIS l... 
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Corsair CX430 NZXT Source 220 Logitech Click! Mouse SteelSeries QcK Mini Diablo III Edition 
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