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Title: How to calculate kh/s of an unreleased card? Post by: gpucoolingmethod on March 01, 2014, 08:22:18 AM The upcoming Rx cards are supposedly going to smash records on the price/performance ratio.
Given that all their specifications are known how can one calculate their hashrate??? (with exact same settings of course) Title: Re: How to calculate kh/s of an unreleased card? Post by: Gator-hex on March 01, 2014, 11:54:55 AM Number of stream processors units (SPUs) is usually a good guide.
HD7850 = 1024SPUs HD7970 = 2048SPUs = 2x as fast. 2x HD7850s = 1024+1024SPUs = as fast as a HD7970 Title: Re: How to calculate kh/s of an unreleased card? Post by: gpucoolingmethod on March 01, 2014, 11:55:50 AM Number of stream processors units (SPUs) is usually a good guide. thanks anything else i can use? Title: Re: How to calculate kh/s of an unreleased card? Post by: Gator-hex on March 01, 2014, 12:05:54 PM Number of stream processors units (SPUs) is usually a good guide. thanks anything else i can use? Yes, don't forget to look at the max TDP Watts, it's a good guide on which is most power efficient. All take power from the Motherboard = 75W 6-Pin PCI-E power connector = 75W 8-Pin PCI-E power connector = 150W HD7850 = 1024SPUs = 150W max = 6.83SPUs/W HD7970 = 2048SPUs = 375W max = 5.46SPUs/W Therefor you should find 2x HD7850s give the same hashing power for 25% less watts. Title: Re: How to calculate kh/s of an unreleased card? Post by: gpucoolingmethod on March 01, 2014, 01:44:50 PM Number of stream processors units (SPUs) is usually a good guide. thanks anything else i can use? Yes, don't forget to look at the max TDP Watts, it's a good guide on which is most power efficient. All take power from the Motherboard = 75W 6-Pin PCI-E power connector = 75W 8-Pin PCI-E power connector = 150W HD7850 = 1024SPUs = 150W max = 6.83SPUs/W HD7970 = 2048SPUs = 375W max = 5.46SPUs/W Therefor you should find 2x HD7850s give the same hashing power for 25% less watts. good to know this formula although this isnt what Im asking for. Im asking how to calculate kh/s of a card not its efficiency |