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Date: November 16th, 2009
Article by: Nathan Glentworth (Owner / Head Editor)
Product was submitted by: HIS
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VIDEOCARD OVERCLOCKING



With the stock values of 625Mhz core and 993Mhz memory set, I allowed ATI's auto-tune to push the card to its 100% stable ceiling. Through testing and benchmarking, it was able to find a 100% stable overclock of 670Mhz core and 1018Mhz memory. When I state a stable overclock, I mean an overclock that works and never freezes or presents artifacts during any game or benchmark. This took quite some time to find a stable setting seeing once the memory warmed up during a benchmark it would artifact.


But after two hours of trying to find the stable overclock, getting a 45Mhz core and a 25Mhz overclock isn't too bad with a cooler which is targeted towards lower stock temperatures and noise levels. I never saw the card go over 54c during testing which is good for a basic cooler.

 

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 Vapor-X HD4850
Sapphire HD4850 X2 Check Prices
XFX Black Edition 9800GTX+ Check Prices
XFX HD4770 Check Prices
Sapphire HD 4770 Check Prices
HIS HD4890 iCooler
HIS HD4870 IcQ4+ 1Gb Check Prices


Benchmarking Programs Are:


3DMark Vantage
3DMark2006
Half Life 2 Episode 2 HOC Benchmark
Far Cry 2 ( 8x AA / 16x AF)
Quake Wars: Enemy Territory ( 8x AA / 16x AF)
Devil May Cry 4 ( 8x AA / 16x AF)
Crysis ( 8x AA / 16x AF)
Crysis WarHead ( 8x AA / 16x AF)

 

 


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