You mean will the Asus ATI Radeon HD6450 with 1GB of graphics memory, work in a Compaq Presario SR2020NX Desktop PC?
Yes.
The Compaq Presario SR2020NX Desktop PC has a PCI-Express x16 expansion slot.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00757470&tmp_task=prodinfoCategory&cc=us&dlc=en&lang=en&lc=en&product=3245048{Motherboard illustration and photo are towards the bottom of the page}
Look at the specifications.
Scroll down to the heading - Expansion slots.
Three PCI. (PCI expansion slots)
One PCI Express x16 graphics.
NOTE*
Looking at the motherboard illustration, it is Wrong.
Shows - PCIEX1 (PCI E X1)
According to the specifications it is a PCIEX16 expansion slot. (PCI-E x16)
A PCI-Express x1 slot has 36 contact pins. 18 on each side.
In comparison a PCI slot {White} has 124 contact pins. 62 on each side.
Looking at the photo of the supposed PCI-E x1 slot they show, the black PCI-Ex1 slot is longer than the white PCI slots.
It is a PCI-Express x16 slot with 164 pins. 82 on each side.
The Asus ATI Radeon HD6450 uses a PCI-Express x16 expansion slot.
So you know the graphics card will fit. Low-profile to boot.
Power requirement:
The Compaq Presario SR2020NX desktop computer comes with a 300 Watt power supply.
(Although in actuality it's more like 70 percent of the maximum rated wattage. 210 Watts)
Enough power for the computer, and the graphics card.
ATI graphics cards do not use as much power as a comparable Nvidia graphics card.
Concerned that the Asus graphics card uses DDR3 graphics ram memory, and the Presario SR2020NX uses DDR2 Sdram ram memory?
Don't be. The graphics cards graphics memory runs independent of the computer's ram memory.
Information on PCI-Express,
http://en.wikipedia.org/wiki/PCI-ExpressFor additional questions please post in a Comment.
(Top right of your page, blue Comment)
Regards,
joecoolvette
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