Title: 5870 1GB/2GB flashability-question Post by: 2weiX on July 19, 2011, 02:59:36 PM Hi all,
I have three 6950s already, and am looking to buy a "cheap" fourth card. I have my eyes on a couple of 5870s. which from the hardware comparison wiki seems to be the card of choice. with my 6950s which are non-reference 1GB models i found out (too late!) that i cannot flash them to 6970s / shaders etc etc. i can only overclock the core to 840 and downclock the mem to 800. is there a similar issue with the 5870s? ie. should i be buying the 2GB version since it is by default more accessible to OCing? thanks in advance! Title: Re: 5870 1GB/2GB flashability-question Post by: Mousepotato on July 19, 2011, 05:25:20 PM I have 1GB 5870's and they hit 450-460 MH/s no problem, right out of the box. That is, with the proper overclock.
Title: Re: 5870 1GB/2GB flashability-question Post by: 2weiX on July 19, 2011, 06:42:43 PM I have 1GB 5870's and they hit 450-460 MH/s no problem, right out of the box. That is, with the proper overclock. did you flash the BIOS to OC? or just use catalyst? clocktweak? RBE? Title: Re: 5870 1GB/2GB flashability-question Post by: deslok on July 19, 2011, 10:05:40 PM i've had no problems with a 5870 reaching 430(2gb eyfinity edition) i would gather that just like overclocking back when we could muck with the fsb (seems so far ago) less memory will result in easier overclocking. I used saphire trixx for overclocking mine.
Title: Re: 5870 1GB/2GB flashability-question Post by: Mousepotato on July 19, 2011, 10:23:42 PM I have 1GB 5870's and they hit 450-460 MH/s no problem, right out of the box. That is, with the proper overclock. did you flash the BIOS to OC? or just use catalyst? clocktweak? RBE? Title: Re: 5870 1GB/2GB flashability-question Post by: 2weiX on July 20, 2011, 07:13:54 AM same with 5830s?
I am seeing a super deal right now, however the stock core of that card is 800MHz, and most good hashrates ~300 are reached with 880 - 1030 MHz. Title: Re: 5870 1GB/2GB flashability-question Post by: deslok on July 20, 2011, 10:40:22 AM I have a sapphire 5830 I ordered from newegg runs at 1025/300 easily.
Title: Re: 5870 1GB/2GB flashability-question Post by: Mousepotato on July 20, 2011, 11:18:17 AM same with 5830s? It's hit or miss with the 5830s (well, any card really). Some of them can OC to 1050 MHz without a problem. Others choke on anything past 960 MHz. YMMVI am seeing a super deal right now, however the stock core of that card is 800MHz, and most good hashrates ~300 are reached with 880 - 1030 MHz. |