Question 1

Does this offer audio output through the HDMI?

Accepted Answer

I am currently running audio through the hdmi with this unit. Just make sure you have the preferred audio device or default set to hdmi output.

Question 2

Does this unit truly require a 400W power supply? My miniITX case only has a 300w.

Accepted Answer

This card is fantastic for the price.  When i owned it, i had a lot of problems with it and getting it to work.  I had it installed in a stock Dell Optiplex 780 which comes with a 305 watt PSU from Dell.  I had a lot of BSOD's and it was difficult to get windows install with this card inserted.  Now i don't blame my troubles on the card itself, but more than likely, the PSU.  I didn't want to upgrade the PSU as this is a HTPC for me.  Ended up going with an Nvidia 210 and have never had any issues since.

Question 3

the card says crossfirex support does it require a bridge?

Accepted Answer

No, it is hybrid crossfire, no bridge is needed and the card does not have a bridge port, it is an automatic crossfire environment when you have to cards of the same chipset and series, I.e. 2 4600's or 2 6450's. The important thing is that both cards have the same processor core name and same Chipset which is your number, I.e 6450, hope this helps

Question 4

I don't see a fan on this GPU. Does it have one?

Accepted Answer

instead of a power-using, noise-producing fan, the Mfr. has generously equipped the GPU on board with a massive heat sink, occupying two-thirds of the card's top surface area ... the air flow inside your case has been determined to be sufficient to provide enough exchange for the heat sink to keep the GPU underneath running within a safe range

Question 5

Does this product support dual monitor use?

Accepted Answer

I never attempted dual monitor usage and unfortunately my system crashed shortly after I installed it and consequently , I haven't used it in sometime. I've been utilizing my laptop instead. I don't think my crash was at all related to this product. While it was up and running, it performed admirably.

Question 6

WILL THIS WORK IN A PRO MAC G5?

Accepted Answer

If the Pro Mac G5 has a PCI express slot it should fit.  Ensure your power supply is at least 400 watts, and go to the xfx website to see if there is a corresponding driver for Mac Operating system.  If your Mac is within the last few years, the Operating system should have the driver for most graphics cards.

Question 7

How many W does it use?

Accepted Answer

Thi is a pretty hefty card for the size and price. It recommends a 400 watt power supply but I have mine installed with a 350 watt on a project machine and it works fine and no issues to report. Unfortunately I don't game so I don't put the card under high load.

Question 8

Will this work if I crossfire it with an AMD Radeon HD 6700 series?

Accepted Answer

Yes. This will crossfire with anything in the hd6xxx series. Though I do believe AMD recommends using the exact same one, down to the exact same gpu.

Question 9

How does this card support CrossFireX when there is nothing for the bridge to connect to?

Accepted Answer

CrossFireX is for AMD/ATI cards only. Geforce cards only support SLI. There is a single SLI finger at the upper left hand corner of the card which will support 2-Way SLI.

Question 10

I have an HP Desktop 64 Bit Windows 7 system CPU 3.5GH. My current video card seems inadequate with only 512 MB memory. Q: Do I need a 64 bit card? Q2: I Radeon 6450 2GB PCI card the best upgrade?

Accepted Answer

A1: Graphics cards are normally far above 64-bit.  I would indeed recommend a graphics cards with 2GB RAM.

A2: what will be "best" for you depends on what your needs are; are you driving multiple monitors, high resolution(s), intensive games (2D or 3D, etc.) will all factor.  The ultimate factor is of course your budget.

Brand	XFX
Model	HD-645X-CLH2

Chipset Manufacturer	AMD
GPU Series	AMD Radeon HD 6000 Series
GPU	Radeon HD 6450
Core Clock	625 MHz
Stream Processors	160

Effective Memory Clock	1066 MHz
Memory Size	2GB
Memory Interface	64-Bit
Memory Type	DDR3

HDMI	1 x HDMI
D-SUB	1 x D-SUB
DVI	1 x DL-DVI-D

Tuner	None
Max Resolution	ANALOG: 2048 x 1536 DIGITAL: 2560 x 1600
CrossFireX Support	Yes
Cooler	LP Heatsink
Thermal Design Power	30W
System Requirements	Minimum Power Supply Requirement: 400W XFX Recommended Power Supply: XFX 550W PSU
Dual-Link DVI Supported	Yes

XFX Radeon HD 6450 2GB DDR3 PCI Express 2.1 CrossFireX Support Low Profile Ready Graphics Card HD-645X-CLH2

Learn more about the XFX HD-645X-CLH2

Customer Reviews of the XFX HD-645X-CLH2

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Warranty, Returns, And Additional Information

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Manufacturer Contact Info

Form Factor	Low Profile Ready
Low Profile Bracket Included	Yes
Card Dimensions (L x H)	6.87" x 2.71"
Slot Width	Single Slot

Item#: N82E16814150658