Which Video Card should i go with?

I'm am in the process of building a computer that i would like to spend a max of 1000 on and i am having a little difficulty lowering the price to under that line. I will mainly be using the computer for gaming and obviously be using it for other things like music and microsoft office programs.

Here is what i have set up as my set up so far:



-HP 24X Multiformat DVD Writer Black SATA Model 1260i



-Antec Two Hundred Black ATX Mid Tower Computer Case



-Western Digital Caviar Blue WD3200AAJS 320GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive



-ASUS VW193TR Black 19" 5ms Widescreen LCD Monitor



-DIAMOND 5770PE51G Radeon HD 5770 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card



-CORSAIR CMPSU-650TX 650W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply



-Logitech 967973-0403 Black PS/2 Standard Deluxe 250 Desktop



-CORSAIR DOMINATOR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory Model TWIN2X4096-8500C5D



-GIGABYTE GA-EP45-UD3P LGA 775 Intel P45 ATX Intel Motherboard



-Intel Core2 Quad Q9400 2.66GHz LGA 775 95W Quad-Core Processor Model BX80580Q9400



-Microsoft Windows 7 Home Premium Full



-Dynatron P985 92mm Ball CPU Cooler



So that is my build that i am trying to get under $1000 and i am at around $1100.

So i am trying to lower the price and i know the video card should be one of the first things and my other option for a video card is

SAPPHIRE 100284L Radeon HD 5750 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card



This card is close in comparison with the other one and if i do down grade to this new one i will save about 40 bucks so is this a good card to down grade to or is there something better.

i don't care if it is ATI or Nvidia|||Cut back on Win 7 and use OpenOffice instead of Microsoft Office. That should save you some cash. Go with the cheaper card, it won't make that big a difference. And just a reminder, 32-bit OS can only handle 3 gigs of RAM. Make sure you get Win 7 64, friend screwed that up with 8 gigs of RAM and spent the last of his money on Win 7 32. 'Twas pissed.|||Get a different power supply 550w should do fine with your setup, also get a 250gts. Directx11 cards from ATI right now are just entry line...you're pretty much burning money if you're buying from ATI