Is this the same RAM?

ok so my system has been locking up due to different RAM. 2 of my RAM are Corsair CORSAIR 1GB 184-Pin DDR SDRAM DDR 400 (PC 3200) Desktop Memory Model VS1GB400C3, and the 3rd one is Corsair XMS CMX1024-3200C2

Now I want to buy another 2 of Corsair XMS that would match mine, but no one got them but ebay.

this is the one they got on ebay:

Brand CORSAIR
Series XMS
Version 2.1
Model TWINX2048-3200C2PT
Type 184-Pin DDR SDRAM
Capacity 2GB (2 x 1GB)
Speed DDR 400 (PC 3200)
Cas Latency 2
Timing 2-3-3-6
Voltage 2.75V
ECC No
Buffered/Registered Unbuffered
Multi-channel Kit Dual Channel Kit
Heat Spreader Yes
Features Platinum Heat Spreader
Recommend Use High Performance or Gaming Memory
Manufacturer Warranty
Parts Lifetime
Labor Lifetime


Mine:

Brand CORSAIR
Series XMS
Version 1.2
Model CMX1024-3200C2
Type 184-Pin DDR SDRAM
Tech Spec
Capacity 1GB
Speed DDR 400 (PC 3200)
Cas Latency 2
Timing 2-3-3-6
Voltage 2.75V
Heat Spreader Yes
Recommend Use High Performance or Gaming Memory
Manufacturer Warranty
Parts Lifetime limited
Labor Lifetime limited


would these RAM sticks go together perfectly? because the ebay one got a different volume # (mine is 1.2 and the platinum stick on ebay is 2.1) and Model # but it seems like it's the same as mine it's just that way because of platinum version I think after I googled it.

They also got another 2 sticks on ebay. it's $20 more, same exact model, only version 3.1. does that make any sort of difference?