RAM/Compatibility Question, then Ready to purchase!

APPROXIMATE PURCHASE DATE: the minute I get some decent responses to check compatibility!

BUDGET RANGE: 100-1100 $

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: gaming, personal PC-movies, homework...

PARTS NOT REQUIRED: Keyboard, Mouse, speakers

PREFERRED WEBSITE(S) FOR PARTS: Newegg or cheaper

COUNTRY OF ORIGIN: USA

PARTS PREFERENCES: See Below...

OVERCLOCKING:not right away-down the road if it's easy enough.

SLI OR CROSSFIRE: No, need more experience

MONITOR RESOLUTION: Well my monitor (good reviews) is recommended for 1680x150

ADDITIONAL COMMENTS: Looking for a Gaming/Personal PC. Games include: wow, Battlefield bad company2, cod series coming out, newer mmo's and whatnot


I have 2 Different builds. Both are basically the same except for the Graphic Cards & Hard Drives. My question is do I go with 5770 and down the road get another 5770, or vice versa; get the 5850 and when they get cheaper, buy another-------Will these builds support that option?

Im just wondering about the RAM to see if it's compatible with the mobo and whatnot. I have the same RAM for both builds but am wondering if I could spend an extra 20-30$ on different G.Skill sticks, would that ram stick also be compatible? (Ill post the link to this ram after the builds.

FIRST BUILD:

CD Reader: LITE-ON Black 24X DVD http://www.newegg.com/Product/Product.aspx?Item=N82E168...

HD: SAMSUNG Spinpoint F3 500gb http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Monitor: Acer X223WDbd Black 22" http://www.newegg.com/Product/Product.aspx?Item=N82E168...

RAM: G.SKILL Ripjaws Series 4GB (2 x 2GB) http://www.newegg.com/Product/Product.aspx?Item=N82E168...

PSU/Graphics Combo: XFX HD ZNFC Radeon HD 5850 1GB & Corsair 650Watt
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

Mobo/Processor Combo: ASUS M4A87TD mobo & 955 Quad Core 3.2
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

OS/Tower: Win7 64bit & Antect 300 Case
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

Before Shipping: $1084






SECOND BUILD:


CD Reader: LITE-ON Black 24X DVD http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Monitor: Acer X223WDbd Black 22" http://www.newegg.com/Product/Product.aspx?Item=N82E168...

RAM: G.SKILL Ripjaws Series 4GB (2 x 2GB) http://www.newegg.com/Product/Product.aspx?Item=N82E168...

PSU/HD Combo:Corsair 650W/ Samsung 1TB http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

Mobo/Processor Combo: ASUS M4A87TD mobo & 955 Quad Core 3.2 http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

OS/Tower: Win7 64bit & Antect 300 Case http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

Graphics: SAPPHIRE 100283L Radeon HD 5770 (Juniper XT) 1GB http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Before Shipping: $ 989


ARe They Compatible? What would you go for?

Will either of these sticks of RAM Work with my builds? If so, will I be able to tell a difference. What would you go with?

--G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) http://www.newegg.com/Product/Product.aspx?Item=N82E168...

or...

G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) http://www.newegg.com/Product/Product.aspx?Item=N82E168...

or...

G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Do I go with my current RAM in my builds, or switch to another one of these-are they even compatible?