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Anandtech has reviewed the SIS 655 in conjunction with an 800 Mhz FSB .
http://www.anandtech.com/chipsets/showdoc.html?i=1806
http://www.anandtech.com/chipsets/showdoc.html?i=1806
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For this type of review we needed a dual channel DDR motherboard that was capable of memory speeds up to dual DDR400 and at 533MHz FSB. The only motherboards that offer this kind of capability are ones based on the SiS 655 chipset. After testing the few SiS 655 motherboards currently available, the Gigabyte SINXP1394 (SiS 655) motherboard was the only 655 motherboard we were able to get working at 800MHz FSB. This setup was not stable 100% of the time, but was just good enough to run our benchmarks at 800MHz FSB
That's kind of what I was thinking. Maybe the lackluster improvement was caused by the slow cpu (it would have been better if the tests were done with a 3GHz instead of a 2.4GHz). Also, the SPEC tests showed a much bigger improvement (about 20%) than the game tests. So maybe today's games just aren't pushing the FSB to its limits.BaldHeadedDork said:Was anyone else underwhelmed by the results of this test? I know this was a jury-rigged way to get to 800MHz FSB. But it was still a test between 800MHz FSB and 533MHz FSB, and I expected more than a five percent improvement in game performance.
This is beginning to smell a little like the Granite Bay, where a big increase in a technical spec offered very little in the way of application perfomance.
BHD
id say yeah the games dont push the cpu speeds yet so far they only push the vidcard,whats the highest req you seen on cpu for a game,the highest ive seen is 1.4ghz,we will have to wait for doom 3baraka said:
That's kind of what I was thinking. Maybe the lackluster improvement was caused by the slow cpu (it would have been better if the tests were done with a 3GHz instead of a 2.4GHz). Also, the SPEC tests showed a much bigger improvement (about 20%) than the game tests. So maybe today's games just aren't pushing the FSB to its limits.
What's the Northwood C? Is that the one with the 800MHz FSB?BaldHeadedDork said:I don't know. Given how this test was conducted I'm going to wait and see how the actual Northwood C and 865PE boards run. But if these results are accurate, the only reason I'd have to consider upgrading would be to get more overclocking headroom-if there is more overclocking headroom.
It will also be interesting to see what happens with Northwood B and 845PE pricing after the new chips and boards are released. We've (okay, I've) been operating under the presumption that the 2.4C will release at the same price point as the current B, but the falling price for the B in recent weeks indicates that Intel is going to market and price the new offerings as a seperate line from the older boards and chips.
BHD