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Would a Phenom II 1055T @ 3.5GHz bottleneck a 7950?

Yeah, was a brand new part (I hope).

Ran IBT and it failed so upped the VCore a notch and it passed a number of runs.

Voltage doesn't seem to downclock as much as Intel chips, but it is a little lower at idle.

EDIT: The slightly concerning thing is the Gigabyte GA-880GM-UD2H that it came with needed 1.475V to hit 3.8GHz. So I'm really doubtful it's gonna be stable with 1.308V...
 
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I doubt that, it sounds like it was originally overvolted far too much. From experience a few hours of IBT/prime is worth a whole day of BF3 gaming.
 
Well, I've installed the 7950!
I've also upped the NB to close to 2500MHz (a little under due to the odd values 272 FSB gives).

I gave Heaven a quick run on the 570 and on the 7950, both with the CPU at 3.8GHz and the NB at close to 2.5GHz.

I'm not gonna post pictures as this isn't the Heaven thread, but the results for those interested are...

570 (@stock):
Unigine Heaven Benchmark 4.0

FPS:
23.1
Score:
582
Min FPS:
6.7
Max FPS:
50.4
System

Platform:
Windows 7 (build 7601, Service Pack 1) 64bit
CPU model:
AMD Phenom(tm) II X6 1055T Processor (3820MHz) x6
GPU model:
NVIDIA GeForce GTX 570 9.18.13.1407 (1279MB) x1
Settings

Render:
Direct3D11
Mode:
1920x1080 8xAA fullscreen
Preset
Custom
Quality
Ultra
Tessellation:
Extreme


7950 (@stock HIS 7950 BOOST IceQ clocks):
Unigine Heaven Benchmark 4.0

FPS:
28.5
Score:
717
Min FPS:
12.9
Max FPS:
60.6
System

Platform:
Windows 7 (build 7601, Service Pack 1) 64bit
CPU model:
AMD Phenom(tm) II X6 1055T Processor (3820MHz) x6
GPU model:
AMD Radeon HD 7900 Series 12.104.0.0 (3072MB) x1
Settings

Render:
Direct3D11
Mode:
1920x1080 8xAA fullscreen
Preset
Custom
Quality
Ultra
Tessellation:
Extreme


If I think about it, I'll try running it at 3.5GHz with the 7950 to see if it does make much of a difference. Then need to decide if I want to push on and try for 4GHz. Heat could be an issue, but I do have enough custom water-cooling equipment to make a loop of if I get really bored.
 
Can you do a test again with same CPU speed, bit with a mild overclock on the 7950. Say 1000/1400, in won't need any extra voltage. And then same again when you have it at 3.5ghz. You should gain a lot more in heaven from graphics overclock.


Then you could try testing again and keep over clocking the graphics, untill either you see any gains from it, or if you can keep going and the graphics card gives up first you will then see which one is the bottle neck. Or at least that's the theory behind bottlenecking.

this is how it will be for most games that. But CPU intensive games, that aren't multi core optimized, like skyrim, gta4, starcraft2.. will benefit more from CPU & nb.
 
Futures said:
Can you do a test again with same CPU speed, bit with a mild overclock on the 7950. Say 1000/1400, in won't need any extra voltage. And then same again when you have it at 3.5ghz. You should gain a lot more in heaven from graphics overclock.


Then you could try testing again and keep over clocking the graphics, untill either you see any gains from it, or if you can keep going and the graphics card gives up first you will then see which one is the bottle neck. Or at least that's the theory behind bottlenecking.

this is how it will be for most games that. But CPU intensive games, that aren't multi core optimized, like skyrim, gta4, starcraft2.. will benefit more from CPU & nb.
Click to expand...

I was going to try OCing the graphics card. Wasn't sure if I was best to use HIS' OC tool or something more standard, like Afterburner.

Also, for anyone that's interested I ran the benchmark again with the 7950 and CPU @ 3.5GHz:
Unigine Heaven Benchmark 4.0

FPS:
28.5
Score:
718
Min FPS:
12.4
Max FPS:
60.8
System

Platform:
Windows 7 (build 7601, Service Pack 1) 64bit
CPU model:
AMD Phenom(tm) II X6 1055T Processor (3511MHz) x6
GPU model:
AMD Radeon HD 7900 Series 12.104.0.0 (3072MB) x1
Settings

Render:
Direct3D11
Mode:
1920x1080 8xAA fullscreen
Preset
Custom
Quality
Ultra
Tessellation:
Extreme
 
With an overclock of 1003/1352 I got the following:

Unigine Heaven Benchmark 4.0

FPS:
28.4
Score:
716
Min FPS:
12.7
Max FPS:
61.6
System

Platform:
Windows 7 (build 7601, Service Pack 1) 64bit
CPU model:
AMD Phenom(tm) II X6 1055T Processor (3820MHz) x6
GPU model:
AMD Radeon HD 7900 Series 12.104.0.0 (3072MB) x1
Settings

Render:
Direct3D11
Mode:
1920x1080 8xAA fullscreen
Preset
Custom
Quality
Ultra
Tessellation:
Extreme

Which is a bit odd as it seems that overclocking the CPU and the GPU isn't making a difference.
 
Martini1991 said:
You'll get bottlenecks, that's for sure at your current clock.
Has anyone here ever ran a 7950 with a Phenom II at 3.5GHZ?

It'll be playable though :p
Click to expand...

I got a spare rig with a 7950 and a 960t@4ghz.

I personally think it's pretty bad the games run very choppy compared to my i5.
 
d_brennen said:
1055t and "upwards of 4GHz easily" does not compute. 4GHz is a fairly substantial milestone for the 1055t in my experience
Click to expand...

yep i agree, 1.4V should get you 3.8/4ghz the most i had my 1100T at was 4.2 on a cheap board, as you cant overclock the multiplier it all has to be done on BLK so depending on your board it should be possible.

The CPUs do seem to run cool just dont believe any core readings as they are false as AMD had no core sensors in these chips just a case sensor, mine was under water so never went over 45C i think the recommended temps are under 55 (i think???).

Will it make a great difference to FPS...im not sure, in games that use multi cores it probably will but i don't think it will make any amazing difference but its a free boost so might aswell give it a try.
 
I bought a 680GTX when I still had my 1055 @3.6 and it sucked IMHO so I moved to a 3570K system and my GPU usage shot up and frame rates increased.

I tried to make a thread depicting the whole transition, but it was a bit of a fail. Just have to take me on my word; if you have the money then do it.
 
I tried the same benchmark in heaven and its the same for me to, oc on CPU or gfx didn't seem to make a difference, which is odd because in 3dmark there was a clear gain. Maybe something in heaven doesnt play well?

I then tried dropping the memory speed from 1666to 1333 with tighter trimmings and that seemed to work a bit. Only had a quick go but the score went up,something to try?
 
I'm running a 7950 with my 1055t, games run smoothly, I would love to upgrade but I'm waiting to see what the next gen of cpu have to offer.
 
I used to have the amd 1055T and it did bottlenect my HIS HD 7950 IceQ BOOST 3072MB.

I upgraded to the asus sabertooth motherboard and AMD 8350 and now its a lot better.

Altho when you run benchmarks the gains aint that great.

I tend to think benchmarks only seem to favour the intel chips.

Unigine Heaven Benchmark 4.0
FPS:
29.2
Score:
736
Min FPS:
7.1
Max FPS:
62.7
System
Platform:
Windows 7 (build 7601, Service Pack 1) 64bit
CPU model:
AMD FX(tm)-8350 Eight-Core Processor (4214MHz) x4
GPU model:
AMD Radeon HD 7900 Series 9.12.0.0 (3072MB) x1
Settings
Render:
Direct3D11
Mode:
1920x1080 8xAA fullscreen
Preset
Custom
Quality
Ultra
Tessellation:
Extreme

Even after overclocking the 8350 to 4.4Ghz and the GPU to clock 1150 and mem to 1500 It only improved the score say buy 20 points.

I have two friends with the same graphics card but with the i5 3570k they benchmark much higher than my setup, but in game our fps are about the same.
 
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I've found, with mine I needed to go into Afterburner and move the power limit slider up to +20. This gave me a much more consistent CPU usage of ~98% (instead of switching between 100% and 66% regularly). it also improved my scores so that I now get number more in-line with the i5s in the Heaven 4 thread.
 
GoogalyMoogaly said:
I've found, with mine I needed to go into Afterburner and move the power limit slider up to +20. This gave me a much more consistent CPU usage of ~98% (instead of switching between 100% and 66% regularly). it also improved my scores so that I now get number more in-line with the i5s in the Heaven 4 thread.
Click to expand...

wow thanks for this bit of info I moved mine up to +20 and now get a lot better results.

3DMark 11 get score of 9400

Unigine_Heaven_Benchmark_4.0
FPS:
36.7
Score:
925
Min FPS:
17.1
Max FPS:
78.0
System
Platform:
Windows 7 (build 7601, Service Pack 1) 64bit
CPU model:
AMD FX(tm)-8350 Eight-Core Processor (4214MHz) x4
GPU model:
AMD Radeon HD 7900 Series 9.12.0.0 (3072MB) x1
Settings
Render:
Direct3D11
Mode:
1920x1080 8xAA fullscreen
Preset
Custom
Quality
Ultra
Tessellation:
Extreme

Unigine Valley Benchmark 1.0
FPS:
40.9
Score:
1711
Min FPS:
21.0
Max FPS:
77.1
System
Platform:
Windows 7 (build 7601, Service Pack 1) 64bit
CPU model:
AMD FX(tm)-8350 Eight-Core Processor (4214MHz) x4
GPU model:
AMD Radeon HD 7900 Series 9.12.0.0 (3072MB) x1
Settings
Render:
Direct3D11
Mode:
1920x1080 8xAA fullscreen
Preset
Extreme HD
 
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