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Date: August 2nd, 2010
Article by: Nathan Glentworth (Owner / Head Editor)
Product was submitted by: HIS
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VIDEOCARD OVERCLOCKING



Unlike Sapphire's silent HD 5550 which in some cases was unstable even during normal operation, HIS's Silence HD 5570 was very stable which allowed me to see just how far this video card could overclock.



With a stock value of 650Mhz core and 1000Mhz memory set, I pushed this card to its 100% stable ceiling. Through several hours of testing and benchmarking, I finally found a 100% stable overclock of 665Mhz core and 1100Mhz memory which resulted in a 15Mhz core and 100Mhz DDR5 over stock clock rates. This pushed the Pixel Fillrate from 10.4 Gpixels/s to 10.6, the Texture Fillrate from 26.0GTexels/s to 26.6 and the memory bandwidth jumped from 64.0Gb/s to 70.4.


Although the CPU processing specs didn't result in much of a difference, the increased memory bandwidth should help with pushing the framerates ahead slightly with no instability.

 

VIDEOCARD BENCHMARKING



The Testbed is comprised of:


Intel QX9770 Extreme Quad Core 3.2Ghz Processor Check Prices
Gigabyte P35-DS4 Premium Motherboard Check Prices
Crucial Ballistix Tracer 2Gig PC-8500 DDR2 Memory Check Prices
Windows Vista Ultimate Premium Check Prices
Maxtor 250gig SATA-150 HD Check Prices


PCI Express Videocards Benchmarked Against:


Sapphire Ultimate HD 5550
HIS Silence HD5570
HIS HD5570
Asus ENGT240
Axle GT 220


Benchmarking Programs Are:


3DMark Vantage
3DMark2006
Far Cry 2 ( 2x AA / 4x AF)
Quake Wars: Enemy Territory ( 2x AA / 4x AF)
Devil May Cry 4 ( 2x AA / 4x AF)
Crysis ( 2x AA / 4x AF)
Crysis WarHead ( 2x AA / 4x AF)
Stalker: Call of Pripyat DX10 Benchmark ( 2x AA / 4x AF)
Stalker: Call of Pripyat DX11 Benchmark ( 2x AA / 4x AF)
DIRT 2 DX11 Benchmark ( 2x AA / 4x AF)

 

 


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