Found some old RAM in the garage

[Cameratoss]

So I found these sweet memory sticks inside an HP pre-built machine. 4 of them total, with 2gbs each! I only run with 4gbs, so I need to find out and I'll ask here if they'll fit my rig, if they're compatible, and so on. I'm a real noob in this area, but I respect the passion you guys have for components. Wish I still roomed with my buddy. He was good with this stuff and built my rig waaaay back.

Here's the RAM I found: Nanya nt2gt64u8hd0by-ad 2GB 2Rx8.PC2-6400U-666-13-E1.800
Let me know if I'm typing in the wrong info.

My current rig:
Mother Board: Asus M4A88T-M AMD 880G/SB710; GbE, DDR3 1866OC; ATI HD 4250, Hybrid xFire; SATA3Gb/s
CPU: AMD Phenom II x2 560 Blk 3.3GHz Dual-Core
2X RAM - DDR3 4GB 1600MHz Corsair (2X2GB)Dominator
GPU: PALIT GTX460 1GB Sonic GDDR5, Direct X11 SLI Ready
(?)Power Supply: Thermaltake TR2 RX 650w, Ultra Quiet 140mm Fan, Single +12V Up to 44A

Edit: I noticed these ones I found are DDR2, so they might not be worth it, even if they're double the gbs. So 4gb DDR3 vs. 8gb DDR2. Major difference I'm sure, but how

[Steeps]

You can't use DDR2 on a DDR3 motherboard. They have different pin layouts.

[MaSSive]

Dont even try to put those sticks in, you will fry them and your mainboard too. Buy more DDR3 of same make and model if you need more RAM, you can sell those and add up to budget.

Dominator? ? 4GB Dual Channel DDR3 Memory Kit (TW3X4G1600C9D)

http://www.frys.com/product/6350391?sit ... IN_RSLT_PG

http://www.corsair.com/en-us/where-to-buy

[Cameratoss]

Dang, but yeah I can sell them, thanks! how much would be reasonable on Craigslist? Ok you guys don't have to think for me.

One thing I really need to ask. Is how much of a benefit would I get from adding 4gb? Achieving 60fps in a few more games?? I get close in PR, or maybe I do get 60fps, but it doesn't feel like it. I want it to look like Youtube 60fps hahaha.

Anyways, thanks for the reply all.