5970 slow?

[uzomoshi]

Could you explain a little bit why you say it's normal? I read everywhere that 6990 is only slightly better than 5970. Golubev estimation is about 15% better. It looks even less in real benchmarks like this one by epixoip http://hashcat.net/forum/thread-1804-pos...l#pid10242. Benchmarks on oclhashcat-plus homepage say PC3 with one 6990 does 3080M/s sha1. How a 5970 doing 2080M/s can be normal?

Thank you