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Topic: which video card is better? (Read 466 times)

hero member
Activity: 546
Merit: 500
Carpe Diem
April 01, 2013, 11:41:37 AM
#9
Ok thanks.  I understand it's best but it's all I have, I'm trying to make do with what I have!  I'm just hoping the 6570's will be functional!
legendary
Activity: 1428
Merit: 1001
Okey Dokey Lokey
April 01, 2013, 11:39:52 AM
#8
When Adding a GPU to your computer, Its best to NOT HAVE A STOCK POWER SUPPLY OF 250-350Watts!!!
You should have a 400-700watt PSU for crap sakes if your gonna add a 6xxx
hero member
Activity: 546
Merit: 500
Carpe Diem
April 01, 2013, 11:37:35 AM
#7
thanks.  from what I've read, I should stick with the 6570 though, as the 6770 needs a lot more power and a separate power connector?  Just seems safer to use 6570 regarding power requirements.
hero member
Activity: 490
Merit: 500
April 01, 2013, 10:40:26 AM
#6
The PSU guidlines are generally 2x or greater than the actual power draw.

You'll probably draw 200-230 watts.

Worse that happens you break the PSU Cheesy

If you use PCI-E to molex adapters spread the load out over different power wires.
hero member
Activity: 952
Merit: 1000
April 01, 2013, 10:36:12 AM
#5
For speed comparsion:
https://en.bitcoin.it/wiki/Mining_hardware_comparison

Note if you overclocking GPU to its max it can take like 25% more watts than official max consumption.
Plug no more than 80% of your PSU to it or the life of PSU will be not long.
If you dont have free electricity then you wasting more money than you can mine - or buying coins directly is cheaper.
legendary
Activity: 966
Merit: 1004
Keep it real
April 01, 2013, 10:35:25 AM
#4
Yes, power supply matters.  Your computer may not be stable if the PSU isn't big enough to handle everything.
hero member
Activity: 546
Merit: 500
Carpe Diem
April 01, 2013, 10:23:54 AM
#3
Thanks for your response but those are my only 2 options. 

Actually, I just saw that the 6770 says it requires a 500W power supply and my comp doesn't have that.  So I guess I have to go with the 6570.  I don't know, I'm trying to figure this out so any help is appreciated.  I have 2 computers, 1 has 300W power supply and other has 350W. Does power supply matter where it says recommended power supply 400W for the 6570?  Thanks
hero member
Activity: 490
Merit: 500
April 01, 2013, 10:10:46 AM
#2
hero member
Activity: 546
Merit: 500
Carpe Diem
April 01, 2013, 09:53:03 AM
#1
I have 2 options:  either I get this video card:  XFX - ATI Radeon HD 6770 1GB DDR5 PCI Express 2.1 Graphics Card and run it on 1 computer.


OR 

I can get 2 of these and run them on 2 computers:  XFX - Radeon HD 6570 1GB DDR3 PCI Express Graphics Card


Which will get me the most Mhash/sec?  Thanks a lot!
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