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Old 10-22-10, 10:14 AM   #1
WD82838
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Question PCI express 2.0 x16 compatible with PCI express 1.0a x16

I believe my motherboard only supports PCI express 1.0a x16. Is my motherboard compatible with a PCI Express 2.0 x16 video card? My current video card is an 8600 GT. Since my PSU is only 300 watts, I would go with a low-end model like the GT 220 or GT 430 if possible.


Iíd like to upgrade my video card so that I can view my current PC on a WD-82838 DLP TV via HDMI out (until I purchase a newer HTPC).


PC Specs:
HP a6250t
Model GN635AV#ABA (also known as: GN635AV)
CPU: Intel Core 2 Duo E4500 (LGA 775) 65 Watts
Motherboard: ASUSTek Computer INC. Leonite2 6.00; The P5LP-LE (Leonite2) motherboard
Intel 945G/GZ/P/PL PCI Express Root Port - 2771
PSU: 300 watts by LITEON PS-5301-08HA*
(1) DVD-RW
(1) 150GB 1500ADFD Velocirpator Hard Drive by WD
Thatís all.

http://h10025.www1.hp.com/ewfrf/wc/d...29205&key=null

Manufacturer's motherboard name: ASUS P5LP-LE
HP/Compaq name: Leonite2-GL8E

Northbridge: Intel 945G
Southbridge: ICH7DH
533 MHz, 800 MHz, 1066 MHz (processor dependent)

Motherboard supports the following processor upgrades (Socket type: 775):
Core 2 Duo E6x00 (Conroe) up to E6700
Core 2 Duo E4x00 (Conroe) up to E4400
Pentium E2000 series (Conroe) up to E2160
Pentium 4 6x1 series (Cedar Mill) up to 661 (3.6 GHz)
Celeron (Conroe) up to 440
Celeron D 3xx series (Cedar Mill) up to 365 (3.6 GHz)

Dual channel memory architecture
Four 240-pin DDR2 DIMM sockets
Supported DIMM types:
PC2-3200 (400 MHz)
PC2-4200 (533 MHz)
PC2-5300 (667 MHz)
non-ECC memory only, unbuffered
Maximum HP/Compaq approved memory is 4 GB*
32 bit PCs cannot address a full 4.0 GB of memory

Video
Integrated video is not available if a graphics card is installed.
Integrated graphics using Intel GMA 950
Up to 256MB (with 512MB or more PC memory)
Also supports PCI Express x16 graphics cards*

Expansion:
One PCI Express x16
One PCI Express x1
Two PCI

http://www.intel.com/Assets/PDF/datasheet/307502.pdf
(See pages 15, 23, 26)

*PSU specs
Input: 100-127V~/8A 50-60 Hz
Output:
+5V/25A MAX
+3.3V/18A MAX
+12V/19A MAX
-12V/0.8A MAX
+5Vsb/2A MAX
Combined Power on +5V and +3.3V rails not exceed 175W Max
Combined Power on +12V and +5V rails not exceed 268W Max
Continuous total DC output power shall not exceed 300W
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Old 10-22-10, 02:14 PM   #2
lduguay
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Default Re: PCI express 2.0 x16 compatible with PCI express 1.0a x16

Google is your friend
Quote:
PCIe 2.0 is completely backwards compatible with PCIe v1.x. Graphic cards and motherboards designed for v2.0 will be able to work with v1.1 and v1.0, and vice versa.
Here
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Old 10-22-10, 04:36 PM   #3
WD82838
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Posts: 2
Question Re: PCI express 2.0 x16 compatible with PCI express 1.0a x16

Yes. I did search prior to asking the question.

Any idea why a 2.0 card will work in a 1.0a slot for some systems but not others? What makes it so trial and error? How can I best improve my chance that the card will work?
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Old 10-24-10, 04:05 AM   #4
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Default Re: PCI express 2.0 x16 compatible with PCI express 1.0a x16

This probably isn't the best contribution, but.

Its the same across most hardware out there. Even though newer hardware can claim backward compatibility with older hardware, it doesn't necessarily mean that it will work all the time. Same goes with software.

Its just the nature of technology - theres always a small gamble involved.
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