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Core vs Memory Overclock

shankly1985

shankly1985

shankly1985

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They was a thread on here not long ago showing the difference between overclocking the Memory vs core but I can seem to find it.

Do any of you guys have a link?

If not I heard that on the AMD 7000 series cards they is no point in overclocking the memory? and its better to just overclock the core?

thanks
 
it varies by benchmark and this is reflected in games to a certain extent, some prefer one and some prefer the other, for general gaming use it usually pays to find a happy medium between both so that you aren't constantly flipping between the 2 on a game by game basis

it usually pays to concentrate on GPU overclock, back that off slightly and then go after the memory clock
 
Generally the core is the giver of performance, vram clocks are good for extra MSAA performance though, in the likes of BF3, a high vram clock can let you reduce core clocks, which in turn reduce core temps.

The best way to find out is give it a go yourself and see what suits you best, but keep in mind vram is easier/quicker to go pop over time than the core.:)
 
Tahiti benefits most from core but you should still bump the memory up as well as you can still significantly improve fps. I find these Core+Memory combinations work well depending on how demanding the game is and how well your card will overclock.

1125/1575
1133/1616
1172/1667
1200/1700
1225/1719
1250/1750
1300/1823
1325/1875
 
LtMatt said:
Tahiti benefits most from core but you should still bump the memory up as well as you can still significantly improve fps. I find these Core+Memory combinations work well depending on how demanding the game is and how well your card will overclock.

1125/1575
1133/1616
1172/1667
1200/1700
1225/1719
1250/1750
1300/1823
1325/1875
Click to expand...

Do they give nice even bandwidth figures matt?? I know you like that :D
 
Nickolp1974 said:
Do they give nice even bandwidth figures matt?? I know you like that :D
Click to expand...

Ummmm...

GuiltyGIF.gif



EDIT


Nickolp1974 said:
Do they give nice even bandwidth figures matt?? I know you like that :D
Click to expand...

I've had a change of heart, im proud of it. Yes they do!! :cool: :cool: :cool:


fygkf.gif
 
In most games and benchmarks i found overclocking the mem made very little difference compared to the core, Heaven benchmark likes overlocked vid mem though. I just overclock the GPU as much as possible first, then took the mem up after cause otherwise i find clocking the mem too high first holds back the core overclock.

If i overclock my mem first it will do about 2000mhz but then when i take my gpu up it will only do about 1300, but if i do the gpu first i get an extra 20-25 mhz on the core and lose about 40mhz on the mem, but this give better fps and bechmarks results for me.
 
LtMatt said:
Tahiti benefits most from core but you should still bump the memory up as well as you can still significantly improve fps. I find these Core+Memory combinations work well depending on how demanding the game is and how well your card will overclock.

1125/1575
1133/1616
1172/1667
1200/1700
1225/1719
1250/1750
1300/1823
1325/1875
Click to expand...

Is there a reason why they work well in this combo?
 
Just done a heaven 3.0 test

1100/1500
FPS 77.7
1957
33.1
165.1

1100/1250
FPS 63.1
1590
14.1
127.1

Massive difference in that test.

settings
Render: direct3d11
Mode: 1920x1080 4xAA fullscreen
Shaders: high
Textures: high
Filter: trilinear
Anisotropy: 4x
Occlusion: enabled
Refraction: enabled
Volumetric: enabled
Tessellation: normal
 
BluD said:
Never mind 1.65v bang it up to 1.7 and see what ya can get :) i assume it will be around 2k like my 7950.
Click to expand...

Diminishing returns past 1823, really 1719 seems to be plenty. The Tahiti cards are ROP limited so core is always going to bring the most gains. I think i can go up to around 1925 max at 1.7.
 
A good bit lower then eh - 225mhz diff. between what your average clock vs mine lol you've obv. done a lot of testing with your core+mem combos, have you used these settings in many real-world scenarios (well I say real world, I mean games) have you noticed any difference as you go up?
 
Doco said:
A good bit lower then eh - 225mhz diff. between what your average clock vs mine lol you've obv. done a lot of testing with your core+mem combos, have you used these settings in many real-world scenarios (well I say real world, I mean games) have you noticed any difference as you go up?
Click to expand...

I haven't but seeing as you asked i just did a quick test. I only ran one game but will run a couple more later when i have time.

Sleeping Dogs - 1080p Extreme 1250 Core vs 1375 stock and 1875 OC'd.

ieudE28.jpg

43uAG6h.jpg


I speculate the difference would be larger at a higher res (1440p+) although we might not see it as the pixel fill rate might hold it back somewhat.
 
Last edited:
See dont ask dont get - thanks for taking the time, seems to me (atleast for sleeping dogs) that the extra bump in mem. clock caused about a 10% increase in fps across the board ( 10% for average and max with 11% bump in min. fps) seems worth wile :)
 
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