Give your opinion of the Sapphire 6GB HD 7970 Vapor-X GHz Edition for Mining???

[de704]

What is your opinion of the "Sapphire 6GB HD 7970 Vapor-X GHz Edition" GPU for BTC/LTC Mining???

Thanks

[Sebacious]

6gb of VRam are absolutely worthless.  You will never use it in gaming before the card itself is obsolete, and you will never use it in bitcoin/altcoin mining. 


Get this instead:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814202008&nm_mc=EMC-IGNEFL061413&cm_mmc=EMC-IGNEFL061413-_-EMC-061413-Index-_-DesktopGraphicsVideoCards-_-14202008-L04D

[CryptoBadger]

A 7950 series GPU is the best choice for mining, IMO. The 7970 has a worse power consumption/hashrate ratio, higher power requirement, runs hotter, and costs more upfront.

I've used the MSI TF3 (old and new revisions), Gigabyte WF3 (old and new revisions), and Sapphire Vapor-X 7950 GPUs. They're all excellent choices for scrypt mining and will get 660+ Kh/sec while undervolted (or ~700 Kh/sec at stock voltages) when properly configured.

[superesc]

A 7950 series GPU is the best choice for mining, IMO. The 7970 has a worse power consumption/hashrate ratio, higher power requirement, runs hotter, and costs more upfront.

Agreed after some research I picked up a 7950 card and its been running great. Just need to make sure they are config correctly as stated above.

[ajolly]

Do you have config guides? I'm currently getting about 550 for ltc mining off my 7950.

I'm using cgminer --scrypt -I 19 -w 256 --thread-concurrency 21712 -g 1 --lookup-gap 2

[macintosh]

I personally dont like it.

[CryptoBadger]

Do you have config guides? I'm currently getting about 550 for ltc mining off my 7950.

I'm using cgminer --scrypt -I 19 -w 256 --thread-concurrency 21712 -g 1 --lookup-gap 2

Are you running at stock clock speeds? The easiest way to increase your hashrate is to increase your GPU core and memory clock speeds. For example, passing in --gpu-engine 1100 --gpu-memclock 1500 to cgminer will attempt to run your GPU at 1100mhz and your GPU's memory at 1500mhz. Exactly how far you can push your GPU varies from card to card, although you can find good starting points for your particular model via Google or these forums.

[macintosh]

The sapphire 6gb is a scam like the rest

[msk]

2 x 7970 OC get me ~1200-1500MH/s with Diablo

not bad imo

[theBee2112]

What those guys said.

2x Gigabyte 7950's would be a great idea

[lovecoins]

 giga 7950 = 550 mhash

[uaweb]

Sapphire 6GB HD 7970 is vry unless.

[blaxxzor]

I recently listed two gigabyte 7970's on ebay 3gb, i think would have been good in a crossfire but prefer to have 1 card.

[rockmania]

i prefer 7950 than 7970

[CryptoBadger]

giga 7950 = 550 mhash

I run my Gigabyte WF3s at 670 Kh/sec. This is while undervolted to 1056mV (stock is 1250). At the stock voltage, these cards will do over 700 Kh/sec easily.

Edit: I just realized that you wrote mhash, not khash. I haven't tried SHA-256 mining on the Gigabyte cards yet, although I'd be surprised if they were that much worse vs scrypt mining.