My understanding is that past a certain point, memory clocks don't really help anymore. Also, did you adjust the power limits to +20? that might help with the throttling.
Little update from my previous post. After many many hours of troubleshooting i have come to the following results with my sapphire dual-x
1) anything over 1075mhz Core and the GPU will begin to throttle while benchmarking. This is not a result of the temp of the card ( which now maxes at 60-61c ) It never use to do this
2) the memory cannot be overclocked at all. it will run @ 1300mhz but dropping it back down to 1250 nets me a 2fps gain in benchmarks. I have tried increases the voltage on the memory with no results. The mem temps are low as well. never gone over 63c. I also tried to run the memory at 1200mhz underclock and it just crashed everytime.
Overall im disappointed with this slight overclock but it is what it is. I am a bit puzzled that the gpu throttles after 1075 now when i would run it at 1125 before w/o any issues.
I always knew the memory didnt overclock well as it would always crash at anything over 1300mhz.
So overall im not sure if its just the new benchmarking software ( heaven 4.0/valley/3dmark fire ) That is exposing a weak overclock or what but definelty bummed out that this is all i can get my card to do now.
My understanding is that past a certain point, memory clocks don't really help anymore. Also, did you adjust the power limits to +20? that might help with the throttling.
Well, for now, with only 2-3 games so demanding, i don't think it's a worthy deal to grab 2 or more 7950s. May be in the future, but not now - for example i don't like crysis, far cry and tomb rider - i don't intend playing them, so what is the point for me to grab two cards - all depending of the customer preferences...
My HD 7950 reference design started to flickering almost 1 week ago. I have no idea what causes it.
I am using the card @ 1200/1575 with % 20 power. Temps are not over 65 when the fan running @ 45-50.
Does anyone have any idea ?
___
Figured it out. Seems I also have to % 20 power up at msi after burner too. I thought catalyst applies above that software turned out I was wrong. If you get any type of flickering try checking boh// catalyst and msi afterburner(if you'r using) : power option %20 more power.
This fixed the problem for me.
Cheers.
Well if you don't like these games that can really put a load on the graphics card, you are a happy man! Less money for you to spend!
Still, I was only showing what's possible, for the people that need it really.
You can have flickering with Radeon cards, if you use unofficial overclocking with MSI Afterburner.
You don't have to do that anymore. Normal overclocking works fine.
My Sapphire card came today, up and running at 1100/1500. Even made a pass through Unigine Valley at 1150/1500. Only used the CCC to overclock it, setting power at 20%. Seems to be voltage locked, I got the 3L version, so this overclock is on stock voltage, that works for me.
Quick question for anyone who uses OCCT to check their GPU overclocks. When I run the GPU test, I only see about 20% load and very low temperatures. When I run it with error checking, I get 0% GPU use and it stays at idle clock speeds. Any idea why this isn't working? I'd like to get this figured out, as it seems a lot more convenient than the alternatives. When I have an unstable overclock on my 7950 I never get artifacts or anything, my whole system will just lock up eventually and I have to restart. I'm hoping OCCT will show errors before it gets to this point and save me some trouble.
It appears I was wrong on my card being voltage locked. I installed Trixx and was able to increase the voltage. Still using the CCC and staying at 1100/1500, but in case people want to get this card and raise the voltage, it seems Trixx will work. Stock voltage is 1250, just like my Gigabyte card was.
Ya I am pretty sure MSI AB is unable to change Voltage on the 3L, but trixx does the job. I also have one. AFAIK, I have no options to change memory voltage though, though with 1250mV stock VDDC, and decent memory OCs anyways, there isnt really a need.
How easy was it for you to OC your memory and core? I get some artifacts and driver crashes in games at higher than 1140 core, currently at 1300 memory. I will probably try OCing memory some more.
I have a sapphire card and was having some throttling issues as well. My issue was that after a while of my card sitting idle for a while it would somehow forget about the +20 power setting even when everything in was set to +20 in the software. This would happen to me even at stock speeds. The problem would be fixed by resetting your overclocks in what ever program you are using. I have the best luck with the sapphire trixx software actually. I am pretty sure this is what your issue is. It seems to be some sort of software tick somewhere. Open up GPU-Z while running valley or something after you reset your overclocks and see if that works. It works for me anyway.Little update from my previous post. After many many hours of troubleshooting i have come to the following results with my sapphire dual-x
1) anything over 1075mhz Core and the GPU will begin to throttle while benchmarking. This is not a result of the temp of the card ( which now maxes at 60-61c ) It never use to do this
2) the memory cannot be overclocked at all. it will run @ 1300mhz but dropping it back down to 1250 nets me a 2fps gain in benchmarks. I have tried increases the voltage on the memory with no results. The mem temps are low as well. never gone over 63c. I also tried to run the memory at 1200mhz underclock and it just crashed everytime.
Overall im disappointed with this slight overclock but it is what it is. I am a bit puzzled that the gpu throttles after 1075 now when i would run it at 1125 before w/o any issues.
I always knew the memory didnt overclock well as it would always crash at anything over 1300mhz.
So overall im not sure if its just the new benchmarking software ( heaven 4.0/valley/3dmark fire ) That is exposing a weak overclock or what but definelty bummed out that this is all i can get my card to do now.
http://www.overclock.net/content/type/61/id/1350537/width/500/height/1000/flags/LL[IMG]
;)[/QUOTE]
Hot damn nice system! But aren't you supposed to be a Galaxy rep with all of them green cards and whatnot?
[quote="hyrule4927, post: 34840993"]Quick question for anyone who uses OCCT to check their GPU overclocks. When I run the GPU test, I only see about 20% load and very low temperatures. When I run it with error checking, I get 0% GPU use and it stays at idle clock speeds. Any idea why this isn't working? I'd like to get this figured out, as it seems a lot more convenient than the alternatives. When I have an unstable overclock on my 7950 I never get artifacts or anything, my whole system will just lock up eventually and I have to restart. I'm hoping OCCT will show errors before it gets to this point and save me some trouble.[/QUOTE]
OCCT always gave me a bit of trouble. Try MSI AB+Combustor?