Which of these graphics cards should I get?

[Malikis2cool]

Which one of these graphics cards should I get? Also, can you tell me the maximum amount of memory my I can get for the graphics card?
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All I see in the back of my computer is a VGA plug in, not an HDMI plug in, hope that helped. Also, can you tell me which one of those are better? If they all suck, can you recommend me a better one. I want to pay no more than $50-$70.
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1) MSI ATI Radeon HD6450 1 GB DDR3

2) Asus ATI Radeon HD6450 Silence 1 GB DDR3

3) Sapphire Radeon HD 6450 1 GB DDR3

4) HIS Radeon HD 6450 1 GB (64bit) DDR3

5) EVGA GeForce GT 630 2048MB GDDR3

6) EVGA GeForce GT 630 1024MB DDR3

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Processor: Intel® Core™2 Duo Processor E7500
(3M Cache, 2.93 GHz, 1066 MHz FSB)

Power Supply: PS-IM400WH

Video Card: Intel(R) G33/G31 Express Chipset Family
Chip Type: Intel(R) GMA 3100

Monitor: Compaq Q1859 Series Wide LCD Monitor

Motherboard: DG31PR
http://images.highspeedbackbone.net/skuimages/large/Intel-DG31PR-I69-2156-main.jpg

Mainboard : Intel DG31PR
Chipset : Intel G31/G33/G35
Processor : Intel Core 2 Duo E7500 @ 2933 MHz
Physical Memory : 2048 MB (1 x 2048 DDR2-SDRAM )
Video Card : Intel(R) G33/G31 Express Chipset Family
Hard Disk : Western Digital WD5000AAKS-00V1A0 ATA Device (500GB)
DVD-Rom Drive : HL-DT-ST DVDRAM GH22NS50
Monitor Type : COMPAQ Compaq Q1859 - 19 inches
Network Card : Realtek Semiconductor RTL8168/8111 PCIe Gigabit Ethernet Adapter
Operating System : Windows 7 Home Premium Home Edition Media Center 6.01.7601 Service Pack 1 (64-bit)
DirectX : Version 11.00
Windows Performance Index : 3.3 on 7.9
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[captainjulius]

I would go with a GT 630 and I think the 1024MB version would be enough but you might want to consider one with GDDR5 ram.

 

[Malikis2cool]

I would go with a GT 630 and I think the 1024MB version would be enough but you might want to consider one with GDDR5 ram.

Can my system handle a 2gb graphics card? And why do you think I should the GT 630?

 

[captainjulius]

I don't think that you're system would really have use for a 2gb card and you shouldn't need that for a 1366 x 768 resolution. You might want to look at the radeon 6670, that's the card that Tom's hardware recommended on the best budget graphics card article for the $60. I would go with that or the 630, they are both pretty close and you can find both for about $60.

 

[KAIJER]

I think all of the 6450s will be a bad choice. within your budget you can buy a SAPPHIRE 6670, which is better

TAKE A LOOK- http://www.newegg.com/Product/Product.aspx?Item=N82E16814102988

Overall HD 6670>HD 6450.

edited: And yes this is $49.99 after $15.00 rebate.

get the 6670 . its the cheapest card that actually can game on medium-high settings in most games.