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Written by Mathew Williams   
Monday, 04 October 2010
Table of Contents: Page Index
ASUS ENGTS450 DirectCU TOP Video Card
NVIDIA Fermi Features
NVIDIA GF106 GPU Fermi Architecture
Closer Look: ASUS GTS 450 DirectCU TOP
Video Card Testing Methodology
DX10: 3DMark Vantage
DX10: Resident Evil 5
DX11: Aliens vs Predator
DX11: BattleForge
DX9 SSAO: Mafia II
DX11: Unigine Heaven 2.1
ASUS ENGTS450 TOP Temperatures
VGA Power Consumption
ASUS ENGTS450 TOP Overclocking
NVIDIA GTS 450 Final Thoughts
ASUS ENGTS450 TOP Conclusion

ASUS ENGTS450 TOP Overclocking

Overclocking the ASUS ENGTS450 TOP was a challenge. There wasn't much headroom left, which comes as no surprise considering this is the highest-clocked GTS 450 ASUS has put out. I did try increasing the voltage, made possible thanks to the upgraded VRM and Smart Doctor Software, but it didn't appear to have much effect. After several rounds of tweaking and stability testing, I settled on the speeds you see below.


At 945MHz, the GPU overclocked to roughly 2% higher than the stock speed for the ENGTS450 TOP and 21% higher than NVIDIA's reference design. The memory managed 4200MHz, a 5% increase over the ENGTS450 TOP and 16% over reference. I could have pushed it higher and still made it through the benchmarks, but at the cost of severe artifacting and possible damage over time. That said, here are the benchmark results of the stable clock speeds I was able to achieve:

Video Game Stock Overclock Additional Overclock Improvement
3dMark Vantage Jane Nash (1680x1050) 18.7 19.3 2.9%
3dMark Vantage New Calico (1680x1050) 16.5 17.2 3.7%
Aliens vs Predator (1680x1050) 20.2 21.0 4.0%
Unigine Heaven (1680x1050) 21.4 22.0 2.8%

With an average increase of only 3.4%, it's clear ASUS is already pushing this card fairly hard. Still, some will want those extra percent. Personally, though, I'd rather have the long-term stability of the stock overclock. Sure, you may never have a problem running at the higher speeds, but for such a small increase I'd rather stick with speeds that I know are going to hold up over time and are guaranteed by warranty.



# RE: ASUS ENGTS450 DirectCU TOP Video CardSTON 2010-10-06 16:22
thx , great review always

DX11: Mafia II ?????
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# RE: RE: ASUS ENGTS450 DirectCU TOP Video CardOlin Coles 2010-10-06 17:33
I don't understand your question.
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# TOP tweak voltageshici 2010-11-28 03:58
what it means tweak voltage....?
i bought this version n i dunno what to setup for Vcore...
what is Vcore actually??
and can what happen if i slightly change the value of engine core?
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