Corsair TWIN2X2048-6400C5DHX XMS2 DHX 2 GB 2 X 1 GB PC2-6400 800Mhz 240-pin DDR2 Dual Channel Memory Kit

I recently upgraded my 5 year old Compaq Presario for Windows 7 x64. I replaced the original 2 gig + 1 gig with this 2x2 4 gig kit. This upgrade alone nearly doubled my Windows Experience Index score... And it took exactly 5 minutes to upgrade.Pros: Fast, easy, works in proprietary Compaq.Cons: A bit expensive.

Used in Dell XPS 210 compact desktop as a max upgrade option. I made so many changes at once (incl SSD, videocard with integrated cooling fan) that I can't attribute the improved performance to the Corsair card alone but the whole systems runs SO MUCH faster, cooler and quieter that I don't know how I ever tolerated it before.

I installed these in my Dell XPS 720 tower. It maxes out at 8GB of RAM running Windows 7. The motherboard cannot take anymore, since it was developed for DDR2 capabilities mainly. I installed the new modules, the BIOS picked up the new DIMMS, continued the boot up process and once in Windows 7, I saw all 8Gigs of RAM with no issues. Very happy with the modules, also they look cool with the heatsink casing.

I only gave this a four because one of the two I ordered was bad and I had to send both of them back to Corsair for replacement. I am being told that two packs are paired together so even though one of them worked I had to send them both back for replacement.I have read over and over again that when adding RAM buy the exact model of ram that is already in the system or replace all the chips with the same new models. I already have these exact two in my system and since I went from 32 bit XP to 64 Bit Windows 7 I decided to up my RAM only because I could.Windows 7 is so much faster than XP it is truly amazing!I did NOT by the RAM to make Windows 7 faster I bought the RAM because I could and because I am staring to do a lot more 3D CAD and Animation and that takes a lot of horsepower.BUY THIS RAM IT IS WORTH THE PRICE!

I went from 4 GB to 8 GB, and it really made my PC Computer run a lot faster! My Windows Index Rating went from 5.9 to 7.0! The 8 GB of Memory seems to be working Ok, so far with No problems with it! That is about it!

So they worked right out of the box at the speeds they should. I guess for most people that's great. But that's where the performance ended for me. I have overclocked my PC's for years and have always used corsair memory. Anytime I have tried any other high end brand of memory they either failed within a month or failed instantly. I also love corsair for over clocking they always leave a lot of overhead play room to push up timings and voltages. ANY kind of increase with timings or voltages with these and my PC beeped and wouldn't boot.So from me they only get 3 stars (it's ok). Corsair normally gets 5 stars from me for all their products.

Great boost for my aging PC.Ordered two more 2x2`s to max out my old tower.No worry about overheating. And make no mistake, RAM can get hot.

product realy bad, after 1 month and 15 days the BLUE SCREEN OF DEATH COMES TO MY!!!, and some guys say to me: run memtestx86 and one of my ships are bad 2 errors in the mb644, i most aply waranty, BETTER BUY MEMOS MUSHKINme salieron malas una basura, las use 1 mes y 1 dias y despues la BLUE SCREEN OF DEATH comenso a apareser y resulta que en el memtestx86 me sale que una de mis memorias tiene 2 errores en el mb644, una desepcion que despues de tampoco tiempo fallen y ahora la garantia a ver si me las cambian o que, MEJOR COMPREN MEMORIAS MUSHKIN