Bitcoin Forum
June 19, 2018, 01:45:37 AM *
News: Latest stable version of Bitcoin Core: 0.16.1  [Torrent]. (New!)
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: 2x6870($300) VS 1x6970($300)  (Read 1721 times)
newguy05
Hero Member
*****
Offline Offline

Activity: 905
Merit: 501



View Profile
January 18, 2012, 08:29:49 PM
 #1

will run everything at stock. which is better for mining? they cost about the same. Thanks

2x6870 ($300)

or

1x6970($300)

▄▄▄████████▄▄▄
▄▄██████      ▀▀▀███▄▄
▄██▀▀  ███       ▄▄  ▀▀██▄
▄██▀     ███     ▄ ██ ▄   ▀██▄
██▀       ███ ▀▄▀▄██████▄▀▄▀ ▀██
██▀        ███  ▀██▀▀  ▀▀██▀   ▀██
██▀         ███      ▄▄▄▄        ▀██
▄██          ███     ▄███▀         ██▄
██           ███    ████            ██
██           ███  ▄███▀             ██
██           ███ ▄███▀              ██
██           ███████                ██
▀██          ███ ▀███▄             ██▀
██▄         ███  ▀███▄           ▄██
██▄        ███    ████         ▄██
██▄       ███     ▀███▄      ▄██
▀██▄     ███      ▀███▄   ▄██▀
▀██▄▄  ███           ▄▄██▀
▀▀██████      ▄▄▄███▀▀
▀▀▀████████▀▀▀

korona
   
████████████████▄
█             █ ▀█▄
█             █   ▀█▄
█             █     ▀█▄
█             █       ▀█
█             ██████████
█                      █
█                      █
█                      █
█                      █
█                      █
█                      █
█                      █
█                      █
█                      █
█                      █
████████████████████████
 

███
█████
▄█████▄
███████
███████
▄█████████▄
█████████████
▄███▄     █████████████     ▄███▄
█▄   ▄▄      █████      ▀█████████▀      █████      ▄▄   ▄█
██▄████      ▀██          █████          ██▀      ████▄██
█████▀       ███▄      ▄███████▄      ▄███       ▀█████
███▄        ██████▄▄▄███████████▄▄▄██████        ▄███
████▄     ███████████████████████████████     ▄████
█████▄▄▄█████████████████████████████████▄▄▄█████
███████████████████████████████████████████████
██████████████▀▀▀▀         ▀▀▀▀██████████████
███████▀▀▀                       ▀▀▀███████
█▀▀                                   ▀▀█
 
1529372737
Hero Member
*
Offline Offline

Posts: 1529372737

View Profile Personal Message (Offline)

Ignore
1529372737
Reply with quote  #2

1529372737
Report to moderator
The World's Betting Exchange

Bet with play money. Win real Bitcoin. 5BTC Prize Fund for World Cup 2018.

Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
jjiimm_64
Legendary
*
Offline Offline

Activity: 1876
Merit: 1000


View Profile
January 18, 2012, 08:32:37 PM
 #2

will run everything at stock. which is better for mining? they cost about the same. Thanks

2x6870 ($300)

or

1x6970($300)

if not for the fact that one deal uses 2 slots, and the other one.

6870 will get you about 290 Mh   that is 580 Mhsh
6970 is about                              400-410

1jimbitm6hAKTjKX4qurCNQubbnk2YsFw
Enigma81
Full Member
***
Offline Offline

Activity: 178
Merit: 100



View Profile
January 19, 2012, 07:45:00 AM
 #3

290MH on a 5870?  Seriously?  I get over 430 from 5850s.
ArtForz
Sr. Member
****
Offline Offline

Activity: 406
Merit: 250


View Profile
January 19, 2012, 09:29:57 AM
 #4

290MH on a 5870?  Seriously?  I get over 430 from 5850s.
*6*870. Probably stock clocks or a suboptimal miner with a very mild OC.
And 430Mh/s from 5850s? That's ~1GHz core. Wonder how long they'll last...

bitcoin: 1Fb77Xq5ePFER8GtKRn2KDbDTVpJKfKmpz
i0coin: jNdvyvd6v6gV3kVJLD7HsB5ZwHyHwAkfdw
Enigma81
Full Member
***
Offline Offline

Activity: 178
Merit: 100



View Profile
January 19, 2012, 04:57:21 PM
 #5

930 core.  under 70C.
ArtForz
Sr. Member
****
Offline Offline

Activity: 406
Merit: 250


View Profile
January 19, 2012, 05:15:02 PM
 #6

930 core.  under 70C.
430Mh/s at 930 core on a 58*50*?
That'd be 335Mh/s stock. On a 5850.
Or 436Mh/s on a stock 5870.
So... why is everyone else reporting numbers *way* below that?

bitcoin: 1Fb77Xq5ePFER8GtKRn2KDbDTVpJKfKmpz
i0coin: jNdvyvd6v6gV3kVJLD7HsB5ZwHyHwAkfdw
bulanula
Hero Member
*****
Offline Offline

Activity: 518
Merit: 500



View Profile
January 19, 2012, 05:25:02 PM
 #7

930 core.  under 70C.
430Mh/s at 930 core on a 58*50*?
That'd be 335Mh/s stock. On a 5850.
Or 436Mh/s on a stock 5870.
So... why is everyone else reporting numbers *way* below that?


ArtForz, how do you calculate these formulas and stuff ?

I look and don't understand anything. LOL

How do you get the mhash/s value from the core and shaders the card has ?
ArtForz
Sr. Member
****
Offline Offline

Activity: 406
Merit: 250


View Profile
January 19, 2012, 05:35:33 PM
 #8

930 core.  under 70C.
430Mh/s at 930 core on a 58*50*?
That'd be 335Mh/s stock. On a 5850.
Or 436Mh/s on a stock 5870.
So... why is everyone else reporting numbers *way* below that?


ArtForz, how do you calculate these formulas and stuff ?

I look and don't understand anything. LOL

How do you get the mhash/s value from the core and shaders the card has ?
It's rather simple to convert between cards of the same family, mining scales pretty much 100% with #shaders * clock.
430Mh/s / 930MHz / 1440 shaders = 0.000321087 hash/shaderclock
0.000321087 hash/shaderclock * 850 MHz = 272923.95 hash/shadersecond
272923.95 hash/shadersecond * 1600 shaders = 436678320 hash/sec.

so to convert, it's generally simply hashrateA / clockA / #shadersA * clockB * #shadersB

bitcoin: 1Fb77Xq5ePFER8GtKRn2KDbDTVpJKfKmpz
i0coin: jNdvyvd6v6gV3kVJLD7HsB5ZwHyHwAkfdw
Enigma81
Full Member
***
Offline Offline

Activity: 178
Merit: 100



View Profile
January 19, 2012, 06:12:59 PM
 #9

930 core.  under 70C.
430Mh/s at 930 core on a 58*50*?
That'd be 335Mh/s stock. On a 5850.
Or 436Mh/s on a stock 5870.
So... why is everyone else reporting numbers *way* below that?


Not sure why everyone else is so low - or why I'm so high.... Here's a screen-shot showing the Device Hardware ID's (5850), MSI Afterburner Settings, and Mining Results.

(EDIT)Hmm.. In taking that screen-shot, I see I'm running a bit warm today.. 74C.. Have to check on my fan.  Also, screenshot shows 427.xx Mhash/sec which was primarily due to me moving images around on the screen - my rate dropped by a few Mhash while I was doing that and taking the capture.  It's usually about 431.xx if I leave the machine alone.

jjiimm_64
Legendary
*
Offline Offline

Activity: 1876
Merit: 1000


View Profile
January 19, 2012, 06:33:06 PM
 #10

snip


Yup..  looks like you have a 5870 there clocking away at the normal 430Mh at 930 clock.

1jimbitm6hAKTjKX4qurCNQubbnk2YsFw
Enigma81
Full Member
***
Offline Offline

Activity: 178
Merit: 100



View Profile
January 19, 2012, 06:44:14 PM
 #11

Hmm.. You might be right, actually.. I remote-desktop into that machine.. maybe it got a 5870 stuck in it rather than the 5850 that I thought was in it..

Have to check when I'm over at the facility where that box lives later this afternoon..
ArtForz
Sr. Member
****
Offline Offline

Activity: 406
Merit: 250


View Profile
January 19, 2012, 06:48:49 PM
 #12

snip
Yup..  looks like you have a 5870 there clocking away at the normal 430Mh at 930 clock.
Yeah, but the PCI device ID says it's supposed to be a 5850...
Honestly not sure WTF to make of that, all I get is "congratulations, you're the proud owner of a 5850 with 1600 enabled shaders."

bitcoin: 1Fb77Xq5ePFER8GtKRn2KDbDTVpJKfKmpz
i0coin: jNdvyvd6v6gV3kVJLD7HsB5ZwHyHwAkfdw
Enigma81
Full Member
***
Offline Offline

Activity: 178
Merit: 100



View Profile
January 19, 2012, 06:52:08 PM
 #13

Just ran GPU-Z.. 1440 shaders.. It's a 5850 like I thought.
http://www.techpowerup.com/gpuz/47rdp/
jjiimm_64
Legendary
*
Offline Offline

Activity: 1876
Merit: 1000


View Profile
January 19, 2012, 06:56:19 PM
 #14


hmmm, interesting..

well,  it sure is hashing exactly like a 5870 would....  maybe a 5870 with a 5850 bios?  i dunno. 

if is look like a duck and quacks like a duck!

1jimbitm6hAKTjKX4qurCNQubbnk2YsFw
ArtForz
Sr. Member
****
Offline Offline

Activity: 406
Merit: 250


View Profile
January 19, 2012, 07:04:00 PM
 #15

Just ran GPU-Z.. 1440 shaders.. It's a 5850 like I thought.
http://www.techpowerup.com/gpuz/47rdp/
Well, iirc GPU-Z shader # is simply based off a hardcoded table of device IDs, so that's no big help either.
Atm I'm out of ideas of how to figure out what is really going on there, just seems *very* odd that your 5850 is 11% faster than what everyone else is reporting, and 111% just happens to be very close to 1600/1440.

bitcoin: 1Fb77Xq5ePFER8GtKRn2KDbDTVpJKfKmpz
i0coin: jNdvyvd6v6gV3kVJLD7HsB5ZwHyHwAkfdw
jjiimm_64
Legendary
*
Offline Offline

Activity: 1876
Merit: 1000


View Profile
January 19, 2012, 07:12:44 PM
 #16



Yup, just call it a 5870 and move forward....  I have some 7970's here in a box, cant wait to get them home Smiley

1jimbitm6hAKTjKX4qurCNQubbnk2YsFw
ArtForz
Sr. Member
****
Offline Offline

Activity: 406
Merit: 250


View Profile
January 19, 2012, 07:28:15 PM
 #17

Now, after massive thread derailment... back to OPs question.
stock vs. stock 2*6870 easily beats 6970. 2*~290 = ~580 vs. ~390 for a 6970.

bitcoin: 1Fb77Xq5ePFER8GtKRn2KDbDTVpJKfKmpz
i0coin: jNdvyvd6v6gV3kVJLD7HsB5ZwHyHwAkfdw
jjiimm_64
Legendary
*
Offline Offline

Activity: 1876
Merit: 1000


View Profile
January 19, 2012, 08:56:20 PM
 #18

Now, after massive thread derailment... back to OPs question.
stock vs. stock 2*6870 easily beats 6970. 2*~290 = ~580 vs. ~390 for a 6970.

agreed and as originally said, if slots are not at a premium

1jimbitm6hAKTjKX4qurCNQubbnk2YsFw
newguy05
Hero Member
*****
Offline Offline

Activity: 905
Merit: 501



View Profile
January 20, 2012, 12:40:05 AM
 #19

thanks guys, i ordered 2x 6870. Hope they dont freeze my pc every 24 hours like my old 5970 did. 

▄▄▄████████▄▄▄
▄▄██████      ▀▀▀███▄▄
▄██▀▀  ███       ▄▄  ▀▀██▄
▄██▀     ███     ▄ ██ ▄   ▀██▄
██▀       ███ ▀▄▀▄██████▄▀▄▀ ▀██
██▀        ███  ▀██▀▀  ▀▀██▀   ▀██
██▀         ███      ▄▄▄▄        ▀██
▄██          ███     ▄███▀         ██▄
██           ███    ████            ██
██           ███  ▄███▀             ██
██           ███ ▄███▀              ██
██           ███████                ██
▀██          ███ ▀███▄             ██▀
██▄         ███  ▀███▄           ▄██
██▄        ███    ████         ▄██
██▄       ███     ▀███▄      ▄██
▀██▄     ███      ▀███▄   ▄██▀
▀██▄▄  ███           ▄▄██▀
▀▀██████      ▄▄▄███▀▀
▀▀▀████████▀▀▀

korona
   
████████████████▄
█             █ ▀█▄
█             █   ▀█▄
█             █     ▀█▄
█             █       ▀█
█             ██████████
█                      █
█                      █
█                      █
█                      █
█                      █
█                      █
█                      █
█                      █
█                      █
█                      █
████████████████████████
 

███
█████
▄█████▄
███████
███████
▄█████████▄
█████████████
▄███▄     █████████████     ▄███▄
█▄   ▄▄      █████      ▀█████████▀      █████      ▄▄   ▄█
██▄████      ▀██          █████          ██▀      ████▄██
█████▀       ███▄      ▄███████▄      ▄███       ▀█████
███▄        ██████▄▄▄███████████▄▄▄██████        ▄███
████▄     ███████████████████████████████     ▄████
█████▄▄▄█████████████████████████████████▄▄▄█████
███████████████████████████████████████████████
██████████████▀▀▀▀         ▀▀▀▀██████████████
███████▀▀▀                       ▀▀▀███████
█▀▀                                   ▀▀█
 
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!