Bitcoin Forum
December 03, 2016, 05:00:10 AM *
News: To be able to use the next phase of the beta forum software, please ensure that your email address is correct/functional.
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: 5870 1GB/2GB flashability-question  (Read 955 times)
2weiX
Legendary
*
Offline Offline

Activity: 1638


View Profile
July 19, 2011, 02:59:36 PM
 #1

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!
1480741210
Hero Member
*
Offline Offline

Posts: 1480741210

View Profile Personal Message (Offline)

Ignore
1480741210
Reply with quote  #2

1480741210
Report to moderator
1480741210
Hero Member
*
Offline Offline

Posts: 1480741210

View Profile Personal Message (Offline)

Ignore
1480741210
Reply with quote  #2

1480741210
Report to moderator
1480741210
Hero Member
*
Offline Offline

Posts: 1480741210

View Profile Personal Message (Offline)

Ignore
1480741210
Reply with quote  #2

1480741210
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1480741210
Hero Member
*
Offline Offline

Posts: 1480741210

View Profile Personal Message (Offline)

Ignore
1480741210
Reply with quote  #2

1480741210
Report to moderator
1480741210
Hero Member
*
Offline Offline

Posts: 1480741210

View Profile Personal Message (Offline)

Ignore
1480741210
Reply with quote  #2

1480741210
Report to moderator
Mousepotato
Hero Member
*****
Offline Offline

Activity: 896


Seal Cub Clubbing Club


View Profile
July 19, 2011, 05:25:20 PM
 #2

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.

Mousepotato
2weiX
Legendary
*
Offline Offline

Activity: 1638


View Profile
July 19, 2011, 06:42:43 PM
 #3

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?
deslok
Sr. Member
****
Offline Offline

Activity: 448


It's all about the game, and how you play it


View Profile
July 19, 2011, 10:05:40 PM
 #4

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.

"If we don't hang together, by Heavens we shall hang separately." - Benjamin Franklin

If you found that funny or something i said useful i always appreciate spare change
1PczDQHfEj3dJgp6wN3CXPft1bGB23TzTM
Mousepotato
Hero Member
*****
Offline Offline

Activity: 896


Seal Cub Clubbing Club


View Profile
July 19, 2011, 10:23:42 PM
 #5

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?
No re-flash necessary.  Just unbox, plug in, turn on and go.  I used AMD GPU Clock Tool to set the overclock and then MSI Afterburner for fan control.  I think re-flashing is only necessary for 6950s.

Mousepotato
2weiX
Legendary
*
Offline Offline

Activity: 1638


View Profile
July 20, 2011, 07:13:54 AM
 #6

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.
deslok
Sr. Member
****
Offline Offline

Activity: 448


It's all about the game, and how you play it


View Profile
July 20, 2011, 10:40:22 AM
 #7

I have a sapphire 5830 I ordered from newegg  runs at 1025/300 easily.

"If we don't hang together, by Heavens we shall hang separately." - Benjamin Franklin

If you found that funny or something i said useful i always appreciate spare change
1PczDQHfEj3dJgp6wN3CXPft1bGB23TzTM
Mousepotato
Hero Member
*****
Offline Offline

Activity: 896


Seal Cub Clubbing Club


View Profile
July 20, 2011, 11:18:17 AM
 #8

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.
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.  YMMV

Mousepotato
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!