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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 2281

post #22801 of 38701
I having a weird issue, when my comp shuts down the monitors on idle my monitors turn black but dont turn off backlight stays on and the led stays on like if active and not in standby.
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post #22802 of 38701
Quote:
Originally Posted by MikeG View Post

Pics of my new MSI R7950 Twin Frozr 3GD5/OC Boost Edition with the heat sink removed:
Warning: Spoiler! (Click to show)




I added a water-block and backplate to my card. These fit the new MSI R7950 TF 3GD5/OC Boost Edition cards perfect and they work great. The only issue I had was that I did not notice a big improvement in my VRM cooling. I replaced the thermal pads they gave me for the VRMs with some Fujipoly Extreme thermal pads, and that lowered my VRM temps by 10 to 15 degrees C. Now I'm very happy.

Alphacool NexXxoS ATXP ATI 7970/50 Serie V2 waterblock


Alphacool NexXxoS ATXP back plate - ATI 7970/50 and V2 series


Furmark Testing
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post #22803 of 38701
Is it true that GIGABYTE have voltage locked the 7950 WF3? I wanted to buy either a GIGABYTE or MSI card for warranty purposes (Closer for warranties with RMA centers in the UK and Netherlands respectively) but there's reports that the GIGABYTE cards are voltage locked and that the TFIII cooler isn't that good (Cooling, noise and overclocking are my three priorities in no specific order)
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post #22804 of 38701
Quote:
Originally Posted by tsm106 View Post

I've got a 75% card that can clock higher than that, so what's that make of your theory?

75% ASIC isn't too bad and different gpus have different max over clock potential but key is keeping temps down for stability and durability and to do this best lowest possible voltage for stability for speed is best.

What is default voltage of your 75% ASIC score card under full load?

I have a new Sapphire VApor X HD7950 Part Number 299-2E210-204SA

GPU-Z report info about my card's current BIOS
http://www.techpowerup.com/gpuz/ke552/

My Vapor X HD7950 has low ASIC score of 57%. 57% ASIC score to me is terrible. In school acceptable passing for average is 70%, 60% and below is definite fail.



VApor X HD7950 with poor ASIC score.
Default voltage under load is very high at 1.25v. For over clocking it the BIOS will only give me .05v extra voltage to go any faster and it doesn't get very fast. Definitely not a 1300mhz card... Maybe a different BIOS would allow for more voltage to go faster to be stable at 1300mhz or higher but from what I am seeing this card is not a high end performing card like it is marketed to be. VRMS don't get hot on this card and I think the BIOS is limiting the VRM power out put.

On the other hand my Sapphire 950mhz Ediiton with ASIC score of 89% will do 1300mhz with 1.22v stable and and the VRMs do get hotter but the BIOS on this card is geared for over clocking.




From what I am seeing a GPU with a high ASIC score doesn't require as much voltage to push a certain speed. Higher ASIC score mean higher quality GPU because it conducts electricity better and doesn't require as much voltage to push the gpu faster.
Edited by SonDa5 - 3/25/13 at 7:09pm
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post #22805 of 38701
My MSI HD7950 has an ASIC score of 60.6%, but seems to clock very well (although it needs a lot of volts). Here is a screenshot of 10 minutes of Furmark at 1300MHz Core and 1890MHz Memory clocks. I have my Core voltage set to 1.3V in Afterburner, but as you can see, there is a big voltage drop.



It is interesting though, my card doesn't seem to have a problem with 1300MHz running Furmark, but it tops out at around 1270MHz with Valley benchmark and about 1180 with 3DMark11.

Does anyone know of a way to set my voltage above 1.3V? I tried the modded Trixx, but it did not work. I heard it doesn't work with the Boost bios.
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post #22806 of 38701
Quote:
Originally Posted by Mackem View Post

Is it true that GIGABYTE have voltage locked the 7950 WF3? I wanted to buy either a GIGABYTE or MSI card for warranty purposes (Closer for warranties with RMA centers in the UK and
Netherlands respectively) but there's reports that the GIGABYTE cards are voltage locked and that the TFIII cooler isn't that good (Cooling, noise and overclocking are my three priorities in no specific order)

This is something that I see mentioned quite often, can anyone confirm?
I've got a non boost gigabyte 7950 at 1100/1500mhz at 1.125v so maybe it's only newer bios that's voltage locked
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post #22807 of 38701
Is the MSI TF3 7950 as good at cooling as the Windforce 3? I might go for the MSI card, although someone offered me a 8 month old GIGABYTE 7970 OC for £220 GBP (Cost around £340 brand new) but I'm not sure what PCB version it is to see if it's voltage locked and whatnot.
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post #22808 of 38701
Quote:
Originally Posted by Tonza View Post

This game will not use any form of PhysX, if so its just for normal ragdolls, since UE3 has integrated support for it. Its AMD gaming evolved title.
It uses a basic non GPU accelerated form of Nvidia Physx.
post #22809 of 38701
I am going to return my sapphire 7950 vapor-x cause i deal some issues and dont get any responce from sapphire technical support.
It run with good clocks and low voltage, 1100/1450 with 1.12 gpu-z voltage (below 75°C with fan at 50% auto) BF3 multi stable but it can not clock over 1150 core without artifacts, no matter the voltage. Artifacts are present when core temp reaches 58°C. Also it has elpida rams and over 1500Mhz it crashes.

I tend to choose the msi 7950, but if it is known, id like to tell me which version is capable of high overclocks with low temps on VRMs and core.
To generalise it a bit, which one of the 7950 out there is, as sure as possible, the best o/cer? Sapphire is not an option and doubt if it ll be again.

I live in Europe, so european amazon's stores will be chosen for purchasing.
post #22810 of 38701
Quote:
Originally Posted by NoGuru View Post

Move volts or lower clocks.
YEEEEEEEEEEEEEEEEEP. Another .05 fixed it, thanks I guess. o.o
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