7950 vs 7970

[how-high]

hi
I found instead of 7950 a 7970
XFX Radeon HD 7970 Video Graphics Card 3 GB PCI-Express X16 Interface DDR5

would this 7970 be better then the 7950?

how are these 2 compared?

7970 should be doing 700Kh/s?

[coin999999999]

hi, im also new here, but i think i can help you with this. Check out this link, https://litecoin.info/Mining_hardware_comparison. XFX 7970 should be doing 710kH/s, provided your setting is correct. The information in the link is just an estimation or sample kH/s people provided but it does give us a pretty good idea regarding the hashrate of the cards. Regarding which card is better to get, it varies from people to people. 7970 draws more current than 7950 but it has higher hashrate. You can do more research regarding the details of these cards. 

[hinrg]

Hi

My Gigabyte 7970's are great they do 740kh/s and are the fastest of all my 10 cards (7950's & R9 280) they do use little more power and run a little hotter but.

0 Alive 67°C 95% 740 | 740  10853 134 0 1.22% 2014-01-04 12:56:46
1 Alive 66°C 95% 740 | 740  10874 130 0 1.18% 2014-01-04 12:57:17
2 Alive 60°C 95% 740 | 740  10951 117 0 1.06% 2014-01-04 12:56:51
3 Alive 73°C 95% 740 | 740  10642 118 0 1.1% 2014-01-04 12:57:04

The thing I would be worried about is XFX heard may bad things about people using them for mining.

[how-high]

The thing I would be worried about is XFX heard may bad things about people using them for mining.

what are other good available cards?

[hinrg]

All cards are hard to get ATM

Bran wise you usually can’t go wrong with Sapphire, Gigabyte, and MSI

[jellyfish420]

i have a vapor-x 7950 and a xfx black edition 7970. the 7950 gets ~650 kh/s and the 7970 ~760kh/s...i would go with the 7970 it hashes higher and runs cooler

[digitsmith]

looks like the 7950 power consumption is about 180W vs 270W for 7970
http://www.techpowerup.com/reviews/AMD/HD_7950/25.html

[hinrg]

I got good results undervolting my 7970's saved over 150watts across 4 cards.

[HappyTrader]

i also undervolted them, all working fine.

[MonkeyDOH]

The thing I would be worried about is XFX heard may bad things about people using them for mining.

what are other good available cards?

what's your budget ?

[digitsmith]

I got good results undervolting my 7970's saved over 150watts across 4 cards.

+1 

[how-high]

ok first card ordered its a
MSI R7950 Twin Frozr 3GD5/OC BE G Radeon HD 7950 3GB 384-bit GDDR5 PCI Express

will probably either get more of these MSI R7950 or I will get more Sapphire AMD Radeon HD 7950 3GB

[nastybit]

7970 is slightly better but I don't recommend xfx
gigabyte and sapphire are much better, also with gigabyte you have 3 years warranty

[popshot]

The thing I would be worried about is XFX heard may bad things about people using them for mining.

what are other good available cards?

7990 is good* - 1,4M#/s and if you somehow manage to squize 4 of these and provide enough power 1500W(?) you would get 5.6M#/s.

* hot hot hot , but has two GPUs in one.

[meade16]

The thing I would be worried about is XFX heard may bad things about people using them for mining.

what are other good available cards?

7990 is good* - 1,4M#/s and if you somehow manage to squize 4 of these and provide enough power 1500W(?) you would get 5.6M#/s.

* hot hot hot , but has two GPUs in one.

I have 2 x 7990, they are undervolted and run at 70c.

[HeatherG78]

I would prefer a 7970 over the 7950

[hinrg]

7990 is good* - 1,4M#/s and if you somehow manage to squize 4 of these and provide enough power 1500W(?) you would get 5.6M#/s.

That using water cooling ? or factory cooling?

[popshot]

7990 is good* - 1,4M#/s and if you somehow manage to squize 4 of these and provide enough power 1500W(?) you would get 5.6M#/s.

That using water cooling ? or factory cooling?

I don't think there's a water block for 7990 but there certainly is one for 7970.

How hot the cards get depend on many factors: manufacturer, avaliable air flow, ambient temperature, voltage/OC appliend.

EDIT: just checked, yes there's one.. but costs like over $100 I don't think it's worth it - powerfull enough fans would do the job.

[hinrg]

Reason I ask is the one listed on mining hardware comparison is water cooled

7990, HD7990-6GD5  1518  1100  1480    cgminer 3.2.2  -I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-powertune 10  60C, Catalyst 13.9, FX-8320, 3x7990, watercooled