Compatible graphics card?

[soup_boy]

Hello I am wondering, which is better? GTX 660 or GTX 670 in performance? Will it be compatible with my pc?
SPECS:
Operating System: Windows 8 64-bit (6.2, Build 9200) (9200.win8_rtm.120725-1247)
Language: English (Regional Setting: English)
System Manufacturer: Hewlett-Packard
System Model: h8-1430
BIOS: 8.11
Processor: Intel(R) Core(TM) i5-3350P CPU @ 3.10GHz (4 CPUs), ~3.1GHz
Memory: 10240MB RAM
Available OS Memory: 10180MB RAM
Page File: 4419MB used, 16000MB available
Windows Dir: C:\windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.02.9200.16384 64bit Unicode
Card name: NVIDIA GeForce GT 620
Manufacturer: NVIDIA
Chip type: GeForce GT 620
DAC type: Integrated RAMDAC
Device Type: Full Device
Device Key: Enum\PCI\VEN_10DE&DEV_1049&SUBSYS_90BE1B0A&REV_A1
Display Memory: 4050 MB
Dedicated Memory: 978 MB
Shared Memory: 3071 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
Monitor Name: Compaq Q2159 Series Wide LCD Monitor
Monitor Model: Compaq Q2159
Monitor Id: CPQ282E
Native Mode: 1920 x 1080(p) (60.000Hz)
Output Type: HD15
Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver File Version: 9.18.0013.1070 (English)
Driver Version: 9.18.13.1070
DDI Version: 11
Feature Levels: 11.0,10.1,10.0,9.3,9.2,9.1
Driver Model: WDDM 1.2
Graphics Preemption: DMA
Compute Preemption: DMA
Driver Attributes: Final Retail
Driver Date/Size: 12/3/2012 07:47:14, 18045968 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B71E3E-5309-11CF-947C-B3B01CC2C435}
Vendor ID: 0x10DE
Device ID: 0x1049
SubSys ID: 0x90BE1B0A
Revision ID: 0x00A1

[Satoru]

The 670 is better but it's obviously more expensive. You may wish to check your power supply however, as you might want to have at least a 500W one

[soup_boy]

I do. More than that, I beleive.

[Kungfooed]

Both will work with your system aslong as the powersupply is 500W or greater and you need 2 6-pin pci-e connectors. Like Satoru said it will be more expensive to go with the 670, but if there are two things you want to go all out on it's the video card and the processor.

[soup_boy]

Okay thank you! Ill take the 670 for increased performance.