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Radeon HD 7870 with Corsair CX430 V2?

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guskline

Diamond Member
Apr 17, 2006
5,338
474
126
Hey guys, just two days back I bought new PC with the following config:

Intel Core i3 3220
Gigabyte GA-B75M
Corsair CXV2 430 Watts
Corsair Vengeance 4GB 1600MHz Ram
Hitachi 500GB 7200RPM 3.0 GBPS HDD
Cooler Master Elite 350 cabinet
Samsung 20inch LED monitor with 1600x900 max resolution
LG DVD writer

I wont be adding any other components other than another corsair vengeance ram which i will add in 3-4 months time. Also the 7870 requires 2x6 pin power connectors but my PSU has only one 6 pin power connector but some people are suggesting that a 7870 can be used with my PSU.

So can I use a 7870 with my config without any problems or should I go with a GTX 660?
Also will the i3 3220 bottleneck the 7870 at 1600x900?


Thanks in advance for the help
The 7870 I have in one of my rigs recommends a minimum PSU of 500 watts.
 

jacktesterson

Diamond Member
Sep 28, 2001
5,493
3
81
a 7870 will run fine off a 430w PSU.

I've run TWO 7850s off a 550w before with 45a without issue.
 

raghu78

Diamond Member
Aug 23, 2012
4,093
1,474
136
i live in india so i have to buy locally only and i am going for the cheapest variant of the cards available here

Gigabyte GTX 660 for 15000 INR (276 USD)
Gigabyte GTX 660 for 16000 INR (295 USD)
Sapphire 7870 non-flex edition for 16500 (303 USD)

My budget is 16500 INR(303 USD), so which one should i go for ?
Get the HD 7870. its clearly a much faster card than GTX 660. the HD 7870 easily keeps up with the GTX 660 Ti in majority of the titles.

http://www.hardocp.com/article/2012/11/12/fall_2012_gpu_driver_comparison_roundup/3

The performance gap with GTX 660 increases with overclocking. the 256 bit memory and 32 bit ROPs on HD 7870 scale performance much better compared to the GTX 660 with 192 bit memory and 24 ROPs.

also the GTX 660 has strict power target restrictions and so OC headroom is reduced.

http://www.hardocp.com/article/2012/09/19/asus_geforce_gtx_660_directcu_ii_overclocking_review/5
 

willomz

Senior member
Sep 12, 2012
334
0
0
The 7870 is faster, but it's not 10% faster, not at 1600x900 anyway.

I'd get the Gigabyte 660.

And the 660 will overclock reasonably, techpowerup has the Gigabyte down with a 10.5% overclock which is practically identical to the latest 7870 review they have which achieved a 10.8% overclock. The 660 just overclocks in a different way to other cards, power target is not the be all and end all.

http://hexus.net/tech/reviews/graphics/49569-powercolor-radeon-hd-7870-myst/

Here you can see that the 660 and the (regular) 7870 are almost indistinguishable at 1080p. The difference does become apparent at 1600p, but at 1600x900 the difference will be totally unnoticeable.
 

guskline

Diamond Member
Apr 17, 2006
5,338
474
126
I have the Gigabyte 7870 OC version with the 1100 clock rate. Outstanding card.
 

seadrag0n

Member
Dec 8, 2012
44
0
61
hey guys just bought a Gigabyte GTX 660 OC version cause the sapphire version of 7870 was not available and other 7870's were way out of my budget..installed it and it is working fine..

so my question is can i overclock GTX 660 with my power supply with the gigabyte oc guru 2 software? i will do it if only it is required...
 

lehtv

Elite Member
Dec 8, 2010
11,900
74
91
At your resolution and with your CPU I wouldn't bother OC'ing it
 

willomz

Senior member
Sep 12, 2012
334
0
0
You can overclock but there is probably no need.
Give it a go at factory clocks and only overclock if you feel you need it.
 

Silver Prime

Golden Member
May 29, 2012
1,671
4
0
Radeon is in the wii u right? So its safe to say it can compete graphically with a low grade computer...?
 

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