HD5870 Still Better Value Than HD7970 !

[Hash-IT]

I am more than willing to accept I have miscalculated something here which is one of my reasons for posting.

I was considering upgrading or adding to my GPU until I did a little window shopping. I was wondering if I have the following right ?

The following are just rough figures very quickly worked out.

My old HD5870

Cost me when new £120
850 MHz Engine Clock
1600 Stream Processing Units
WPA Cracking Speed 101.2 kps


HD7970

Cost now (cheapest I have seen today) £250
925MHz Engine Clock
2048 Stream Processors
WPA Cracking Speed about 140.0 kps (estimated)


So roughly speaking I could have bought 2 x HD 5870 cards for the same price as a new HD7970 now. That means "bang for buck" value of the HD5870 is massively better than the HD7970. This is compounded further when you consider the price you can get HD5870 cards for now, especially considering the secondhand market.

I have to say I am a little disappointed I would have thought 2 years on from the HD5870 I would have been seeing double the performance for the same price.


Bang for buck rating...


HD5870 £1.18 per 1kps

HD7970 £1.78 per 1kps

So I think the HD7970 would have to be priced at about £165 before it was comparable with the old HD5870. Am I right ?