1GB DDR2 667MHz UDIMM PC2-5300 CL5 1.8V DIMM Non-ECC Unbuffered Desktop RAM Memory Module

I bought the twin pack for my 2007 Dell Inspiron 531 desktop which came out of the box with 2 GB RAM. This is my backup pc and I'm running Linux Lite on it. Stuck the two new DDR2 1 GB RAM sticks in the two open slots. Plugged all the wires back in and pc instantly recognized the new RAM, 4 GB total now. A-Tech is a good company!

Snapped right in. Boosted my old "dinosaur " desktop PC to workable keepsake.

Bad memory in a desktop is never any fun, two of the sticks went bad in my pc, so I ordered these two and it's all recognized and working well.

Arrived promptly and worked.

Purchased (2) sticks of PC2-6400 2GB, and that's what the package reads. They match the previous (2) sticks identically, and the computer runs without any issue. However, when you enter the BIOS (latest revision 1.60A), it reads all (4) of them as dual-channel 667 MHz sticks, not the 800 MHz speed the package claims they are. I'm not sure if this is a BIOS limitation, but it's disappointing. Since they're so inexpensive and the PC is running fine, I'm not going to return them. I just wish I was getting the speed they're rated for, especially since I also upgraded the CPU to a Intel® Core™2 Quad Processor Q9500 running at 2.83 GHz, 1333 FSB.

it worked and it was cheep.

Bought the 1 GB per stick version:  2GB kit (1GBx2) DDR2 PC2-6400 DESKTOP Memory Modules (240-pin DIMM, 800MHz) Genuine A-Tech Brand For two sets of 1 GB pairs, the speeds matched, timings matched, and no problems detected through a 24 hour run of Memtest86+ (13 passes total through the 4 GB).If you're still reading then I suppose you may not know what you're fully getting (in terms of the product itself). A little backstory, DDR2 has been replaced quickly ever since DDR3 came out like 8 years ago. I don't think any manufacturer makes new DDR2 sticks for that reason, especially with DDR4 soon to repeat that history.Imagine hundreds of thousands of computer towers recycled/scavenged with those DDR2 DIMMs still lying within its chassis. Millions of obsolete sticks in storage boxes. Then for whatever reason, you've now ended up needing DDR2 again because you didn't want to let go of that HP/Dell/Acer/etc tower because "it still worked". It perhaps had 2 or 3 GB inside, and mix and match speeds, might even have been running in Single channel all this time, finally needing to set things right (instead of putting it out to pasture). I had a tower lying around with a AMD Athlon 64 X2, their first dual core CPUs. I had a choice between finding an upgrade to the CPU (which would have made the bigger difference, though not worth the effort), or at least making sure the ram was not the bottleneck (I could not even watch YouTube @ 1080p without hiccups).So what are you getting from "Genuine A-Tech Brand"? Refurbished DIMMs.In my case CPU-Z stated one pair came from lifetimememory, while the other pair is from Nanya (which included serial number/manufacturing date), That's definitely not a problem, ram is ram, so as long as it works at the listed specifications, which it does.After installing and running the checks, definitely a noticeable performance improvement from a 3GB, single channel setup (don't ask). YouTube @ 1080p worked fine at 30 FPS, but it still struggled for a full 60 FPS video (but a remarkable improvement). Netflix at least runs smoothly now, which was my main reason for keeping it and hooking up to a TV. Upgrading ram may not work for all scenarios, but for mine it's no longer ram, but a CPU bottleneck confirmed.Why knock off one star? They put those stickers right on top of the memory modules. For the 2 GB sticks they may have them back/front and is unavoidable, but the 1 GB sticks had an empty backside they could have stuck their stickers on instead. The old DIMMs I pulled out had the stickers peeling off because the stickers were on the modules as well (and these were OEM sticks). Wouldn't warranty be voided if the stickers were removed, even if naturally peeling off? Then again, by that time I hope to not be needing a replacement.

I bought this 4 GB of RAM to modernize an old CPU that had only two 1 GB SIMMs. I used the two 2 GB SIMMs from A-TECH in slots 1 and 2 in place of what had been there. As expected, the BIOS said the RAM had been changed, so I took a quick trip through the BIOS setup. I now have 4 GB of RAM.I wonder if I can make it 6 GB by putting the leftover 1 GB SIMMs into slots 3 and 4. Anybody know?

Cumplió con los expectativas

Muy buena calidad y un excelente precio, el envío tardo bastante pero valió la pena