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Gigabyte windforce hd7950 3gb

Associate
Joined
9 May 2012
Posts
851
Location
South Wales
hi guys

im just after a little help if you can, i know its not much off a graphics card i picked this up at a cracking price until i can afford a decent new one after rebuilding my whole system.

i have installed oc guru ii and the drivers and was wandering if anyone had any help on settinbg the best oc for this graphics card ?

or is it worth installing msi afterburner instead ?

specs are below in signature.

thanks guys
 
You should be able to get 1100-1200MHz on the core depending on how much voltage you want to add, and close to 6GHz on the memory. I don't know anything about OC Guru II, but Afterburner will work fine with any card and is generally considered the best of the overclocking programs.
 
You should be able to get 1100-1200MHz on the core depending on how much voltage you want to add, and close to 6GHz on the memory. I don't know anything about OC Guru II, but Afterburner will work fine with any card and is generally considered the best of the overclocking programs.

am i best removing oc guru then and just using afterburner
 
This might sound strange, but there's a good reason and I will link to a post I made regarding testing with my own 7950:- I think it would also be worth testing to see if you gain better results by undervolting than by overclocking.

Some cards are banging against the maximum power draw limit and throttling even at stock and many AMD cards are noted for it. Overclocking just makes them throttle more, especially if you over-volt to get a higher overclock, whereas undervolting reduces power draw and thus throttling.

I spent about a day testing numerous settings with my 7950 and I got the best results undervolted as far as possible at stock speeds. Slightly higher performance occured at the highest possible clocks with the highest possible power consumption, but that resulted in disturbingly high temps even with fans howling at maximum speed. Undervolted to the max at stock was more than 30C cooler and a lot less noisy while giving only slightly less performance.

https://forums.overclockers.co.uk/threads/7950-vrm-temps-what-should-they-be.18599871/

Quick summary - >35% increase in benchmark results solely from reducing throttling, no overclocking at all. Just reduced voltages and increased maximum allowed power draw on the card (i.e. telling it to throttle at a higher wattage).

I'll add my ha'porth for Afterburner too. It's pretty much perfect for tuning graphics cards. Voltages, clocks, fan speeds, monitoring, OSD for pretty much everything you want (or nothing at all if you want)...it has everything and it's very robust.
 
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This might sound strange, but there's a good reason and I will link to a post I made regarding testing with my own 7950:- I think it would also be worth testing to see if you gain better results by undervolting than by overclocking.

Some cards are banging against the maximum power draw limit and throttling even at stock and many AMD cards are noted for it. Overclocking just makes them throttle more, especially if you over-volt to get a higher overclock, whereas undervolting reduces power draw and thus throttling.

I spent about a day testing numerous settings with my 7950 and I got the best results undervolted as far as possible at stock speeds. Slightly higher performance occured at the highest possible clocks with the highest possible power consumption, but that resulted in disturbingly high temps even with fans howling at maximum speed. Undervolted to the max at stock was more than 30C cooler and a lot less noisy while giving only slightly less performance.

https://forums.overclockers.co.uk/threads/7950-vrm-temps-what-should-they-be.18599871/

Quick summary - >35% increase in benchmark results solely from reducing throttling, no overclocking at all. Just reduced voltages and increased maximum allowed power draw on the card (i.e. telling it to throttle at a higher wattage).

I'll add my ha'porth for Afterburner too. It's pretty much perfect for tuning graphics cards. Voltages, clocks, fan speeds, monitoring, OSD for pretty much everything you want (or nothing at all if you want)...it has everything and it's very robust.

I’ll look into afterburner, did you delete on guru I ?
 
I’ll look into afterburner, did you delete on guru I ?

Just remove it, I had the Sapphire 7950 myself but never used their own utility, MSI AF offers more options and the custom fan profile is a bonus. I tried Gigabyte's software on my 1080Ti but it seems to use a fair bit of background process while AF is pretty much near 0%.

For a quick dirty overclock, these cards can easily do 1ghz on the core with without issue, which itself offers a fair bump in performance. You would see some gains overclocking the memory as well, but I found it to be a little more trickier to do compared to the core. I had a NZXT G10 cooler on mine after a couple of years to eek out more performance (and to keep noise low) but as mentioned above even with good thermals, you'll eventually hit a power usage limit.
 
Just remove it, I had the Sapphire 7950 myself but never used their own utility, MSI AF offers more options and the custom fan profile is a bonus. I tried Gigabyte's software on my 1080Ti but it seems to use a fair bit of background process while AF is pretty much near 0%.

For a quick dirty overclock, these cards can easily do 1ghz on the core with without issue, which itself offers a fair bump in performance. You would see some gains overclocking the memory as well, but I found it to be a little more trickier to do compared to the core. I had a NZXT G10 cooler on mine after a couple of years to eek out more performance (and to keep noise low) but as mentioned above even with good thermals, you'll eventually hit a power usage limit.

downloaded afterburner what do i do now
 
I would be tempted to do some benchmarks first at stock, and keep an eye on AF on how hot the GPU gets. It will give you a starting point and give you a general idea how much thermal headroom you have. 90c would be the absolute max.

Might be worth whacking the power limit setting to the max as well.
 
Have you removed the gigabyte oc guru ii software or are you running that and afterburner

I never installed it. Only Afterburner. My card wasn't from Gigabyte, but I would only use Afterburner anyway.

downloaded afterburner what do i do now

Uninstall OC Guru, install Afterburner.

Run a benchmark at stock settings to (a) confirm everything is working and (b) get a baseline to compare any other results to. I used the Heaven benchmark from Unigine - it's a free download and good for DirectX 11.

Afterburner has some very useful monitoring settings in Settings (gearwheel icon on the main display) under the monitoring tab. I think the key ones for you will be GPU temp and power limit (if it's available for your card, which I'm not sure of). When I did my 7950 with an older version of Afterburner, I had to monitor several settings to see if the power limit was being hit, but that power limit setting does it all for you.

I also used HWINFO64 to measure the VRM temp on the graphics card because Afterburner doesn't measure that and it can be an issue with some coolers. I'd disable monitoring in Afterburner at that point, so I can't say for sure if you can run both simultaneously.

After the benchmark run, bring up Afterburner and look at those settings. GPU temp max will show as a figure in addition to the graph of GPU temp, but power limit is something you'll need to look at the graph for because it only has two values. 0 means your card didn't hit the power limit, 1 means that it did. So you'll need to look at the graph right after the benchmark finishes to see how much it was hitting the power limit during the benchmark because even a fraction of a second at the limit will show as a max of 1.

If you are hitting the power limit a lot (and I expect you will be), gains from overclocking will be less than you'd expect because your card is being power throttled and further overclocking will increase power draw and thus increase throttling.

One thing you can do is to increase the power limit, which is a simple slider on Afterburner's main screen. That increases the amount of power your card can draw without being power throttled. It won't increase clock speeds or voltages, only the maximum power draw. Doing so will probably cause your card to exceed its specified power draw, so it counts as overclocking in terms of risk and warranty (if your card had one). It might cause over-spec power draw from your motherboard's PCI-E slot and/or your PSU's power cable too. Do it at your own risk, like all overclocking. It will probably be fine. It's not much over spec. But its at your own risk.

Run the same benchmark again, note the results again, especially the power throttling and GPU temp.

If you do that and you're still being power throttled, I'd suggest decreasing voltages a bit while keeping clock speeds the same.

Repeat the above two steps until you either stop being power throttled more than rarely or your card fails to complete the benchmark. If the run fails, nudge the voltages back up to the last successful settings, then add a little more for stability if you're intending to use those settings for more than one benchmark. I got mine down to 1.0V for GPU and 1.5V for VRAM, but it will vary from card to card.

If you get a stable run without power throttling, start increasing clocks a little at a time, monitoring GPU temp and power throttling for each run.

You should change GPU and VRAM settings seperately, benchmarking after each change.

In short, it's about getting max clocks while not exceeding power draw limits or temperature limits. In my case, the optimal settings were 950/1275 (a tiny overclock on the GPU only) with GPU at 1.05V and VRAM at 1.5V. But your card will probably be different.

You'll see references to 7950s running over-volted and with GPU clocks as high as 1200 and VRAM as high as 1600.

I got mine to 1100 and 1575, which were the max settings available using the version of Afterburner I was using, and it did that with stock volts...and the benchmark scores were lower than they were from undervolting instead of overclocking and the temps were much too high for my liking and the noise was much too high for my liking.

But if you want to be thorough, you could try both approaches and see which works best for you. Different hardware might get different results. Or try a mix of both rather than max overclocking or max undervolting at stock clocks.
 
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do you guys have screen shot of your afterburners please

Sure. This is Afterburner with the options window popped up and set to the monitoring tab. It's showing the settings for profile 2, which is my routine gentle overclock profile (1 is stock).

Rw3Xzox.jpg
 
This might sound strange, but there's a good reason and I will link to a post I made regarding testing with my own 7950:- I think it would also be worth testing to see if you gain better results by undervolting than by overclocking.

Some cards are banging against the maximum power draw limit and throttling even at stock and many AMD cards are noted for it. Overclocking just makes them throttle more, especially if you over-volt to get a higher overclock, whereas undervolting reduces power draw and thus throttling.

I spent about a day testing numerous settings with my 7950 and I got the best results undervolted as far as possible at stock speeds. Slightly higher performance occured at the highest possible clocks with the highest possible power consumption, but that resulted in disturbingly high temps even with fans howling at maximum speed. Undervolted to the max at stock was more than 30C cooler and a lot less noisy while giving only slightly less performance.

https://forums.overclockers.co.uk/threads/7950-vrm-temps-what-should-they-be.18599871/

Quick summary - >35% increase in benchmark results solely from reducing throttling, no overclocking at all. Just reduced voltages and increased maximum allowed power draw on the card (i.e. telling it to throttle at a higher wattage).

I'll add my ha'porth for Afterburner too. It's pretty much perfect for tuning graphics cards. Voltages, clocks, fan speeds, monitoring, OSD for pretty much everything you want (or nothing at all if you want)...it has everything and it's very robust.
Which 7950 did you have, my Gigabyte Windforce X3 7950 has never throttled no matter how much voltage or clock speed i throw at it.

Also can you remember what the stock voltage was on it?
 
Which 7950 did you have, my Gigabyte Windforce X3 7950 has never throttled no matter how much voltage or clock speed i throw at it.

Also can you remember what the stock voltage was on it?

you have same model as me, i dont have option to change core voltage in afterburner, just core clock which is currently 1000 and memory clock at 1250 its ays gpu clock at 300 on left temp of 36
 
Don't know if it's still an issue or if it was just a problem with this particular card but I was trying to overclock my IceQ 7950 a couple of months ago on current drivers using afterburn and as soon as I set either the memory or core to any thing above stock the core would drop to 300MHz and the memory would drop to 150MHz and they would get stuck at those settings no matter how much load was put onto the card. The only way to get the card back to defaults was to do a hard reset.

I searched around and found a lot of people having the same issue trying to overclock R9's and it was pointed towards the drivers.

I rolled drivers right back to beta 15. something I cant remember now but I was finally able to get an overclock, trouble was windows 10 kept updating the drivers on its own so I gave up with it in the end.

any way this is the original thread from when the 7950's came out and answers a lot of the questions on overclocking the card.

https://forums.overclockers.co.uk/threads/official-7950-ice-q-owners-club.18539905/
 
Don't know if it's still an issue or if it was just a problem with this particular card but I was trying to overclock my IceQ 7950 a couple of months ago on current drivers using afterburn and as soon as I set either the memory or core to any thing above stock the core would drop to 300MHz and the memory would drop to 150MHz and they would get stuck at those settings no matter how much load was put onto the card. The only way to get the card back to defaults was to do a hard reset.

I searched around and found a lot of people having the same issue trying to overclock R9's and it was pointed towards the drivers.

I rolled drivers right back to beta 15. something I cant remember now but I was finally able to get an overclock, trouble was windows 10 kept updating the drivers on its own so I gave up with it in the end.

any way this is the original thread from when the 7950's came out and answers a lot of the questions on overclocking the card.

https://forums.overclockers.co.uk/threads/official-7950-ice-q-owners-club.18539905/

thats seems to be what has happened to mine, says that on left hand side but in middle says 1000 on core and 1250 on memory
 
Which 7950 did you have, my Gigabyte Windforce X3 7950 has never throttled no matter how much voltage or clock speed i throw at it.

Also can you remember what the stock voltage was on it?

Vertex something...

VTX3D 7950 Boost X-Edition. That's the one. Stock voltage was 1.15V GPU and 1.6V VRAM.

To give a quick indication of how much it was being power throttled, here's some results from the Heaven benchmark. Everything was exactly the same for each run apart from the voltages and power limit.

These figures are all at stock GPU and VRAM speeds (930/1250), all with the same benchmark settings and all with everything else (CPU, etc) the same):

Out the box (1.6V VRAM, 1.15V GPU): 39.8
+10% power limit, 1.6V VRAM, 1.15V GPU: 49.6
+20% power limit, 1.5V VRAM, 1.05V GPU: 53.2
+20% power limit, 1.5V VRAM, 1.0V GPU: 54.2

EDIT: It might be worth mentioning that IIRC the power throttling didn't change the GPU clock speed. It changed the GPU load, resulting in it going up and down a lot when it should have been sustained at 100%. I'm not sure, but I do remember that the power throttling wasn't immediately obvious. I undervolted to reduce temps, got an increase in performance as well as reduced temps and then realised it must be throttled.
 
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