Title: 290x Hynix 15% faster >Elpida. Identify mem by P/N! Offer 5$ 4 every 290x specs Post by: 5andr0 on January 13, 2014, 04:07:33 AM I recently ordered 8 x Sapphire BF4 290x cards from different Vendors. Only 3 of them have Hynix Memory and 5 of them have Elpida. (I was told, all Saph. BF4 models have Hynix mem, but the majority was wrong :/ )
What i found out was, that the Hynix cards have product numbers in this format: 102-C67-101-00 000001 All three have 00 000001 in the end. S/N vary from Z1349.. to Z1350.. The Elpida cards have P/Ns like 102-C67-101-01 023036 This made me think, that -00 cards come with Hynix and Elpida cards have -01 Could you please help me to confirm this? I will give you 5$ in bitcoins for your 290x information! Just upload photos of your cards p/n and s/n as proof (from green and white sticker on your card) and up a screenshot from hawaiiinfo. PM or post me your btc adresses! You can find out about Hynix/Elpida on Windows with Hawaiiinfo12 from here: http://www.overclock.net/t/1445030/is-your-r9-290-unlockable-find-out-here (http://www.overclock.net/t/1445030/is-your-r9-290-unlockable-find-out-here) (instructions inside) For linux users just use the following method: your hashing speed can't reach 900, u got about 860 kh/s on 900core/1500 memclock? --> elpida your hashing speed is ~980 with 1025/1500 memclock --> hynix Here's my Benchmark of a 290x Hynix and a 290x Elpida from the same batch (s/n only differs by 3300), same pool, different product number, based on 1500 mem-clock: http://cdn.overclock.net/a/a2/a253d943_miningchart.jpeg step by step proof: ultra wide image (http://cdn.overclock.net/5/5d/5d292e11_chartproof.jpeg) --> overclocking elpida does more harm than good! The speed difference is def. because of the memory. Scrypt is pretty memory intensive and i benchmarked the cards with oclhashcat md5 & sha, which doesn't use the memory at all and achieved equal hashing speeds. I think that AMD started to use the -01 product number in late november 2013 builds, when the C67-101-01 bioses came out. This means older 290x cards could still be the -00 model and have elpida & hynix. To collect more infos about this i will need your help to post me your 290x specs: - card vendor & model number & bf4 version or not - hawaiiinfo output about hynix / elpida - long p/n from the green sticker on your gpu or short p/n from your box - long s/n from the white sticker on your gpu or your box (really needed to find out when it's safe to say to get a hynix model only) - date bought - mining speed and your clocks - retail bios version and bios part number (ex. 113-C6710100-102) if accessible (catalyst hardware info in windows) (the 5 in C6710150 means uber mode enabled/bios switch right) for linux: Code: lspci -v | grep 'VGA' Code: sudo echo 1 > /sys/bus/pci/devices/0000:02:00.0/rom Code: sudo strings -a -t x /sys/bus/pci/devices/0000:02:00.0/rom | grep 'C671\| VER0' Code: sudo echo 0 > /sys/bus/pci/devices/0000:02:00.0/rom Thank you very much in advance! Info collection:
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