Pros: Great memory at a great price. Couldn't ask for anything better.

Cons: None! Don't wait, it sells out quick!

Pros: Very good price from Newegg. Perfect match for Mac Pros. Same heat sinks as the memory that came in my Mac.

Cons: I have purchased 3 sets of this memory so far. Last pair had a bad stick with parity errors which caused lock ups on machine. Sent the pair back to Newegg and waiting for replacement.

Overall Review: Highly recommend. But definitely check the memory after installing to check for parity errors. Return right away if you find any.

Pros: Exact match to the RAM that came in my MAC PRO. Fan speed stays low because the MAC recognizes this memory, so it doesn't default to high-speed. Memory tests show 100% error free memory and speed is outstanding.

Cons: Price is fair, wish there was a better price cut for 2 x 2GB, I would have ordered more memory...

Overall Review: Definitely buy in pairs to ensure your memory pairs are exact matches... reduces chances of memory errors (even with high quality brand-name memory like Crucial)...

Pros: These are identical to the 2GB's I originally got with my MacPro tower. Only difference is that the OEM doesn't have the Crucial Sticker. Otherwise all the Micron part numbers are the same.

Cons: Can't beat OEM product at 1/2 the price.

Pros: Worked perfectly in my Mac Pro quad 2.66Ghz. Just popped it in and ran a Memtest. "ok's" across the board!! The heat sinks are identical to the ones that came with the system. I was a little unsure of using anything but apple brand RAM. Then I saw the price and I never had any problems using crucial in in the past, in any of my PCs. So save yourself $300 and buy this memory!

Cons: None. So far So Good!

Overall Review: Newegg has once again been amazing! I had this installed in my mac in less than 24 hours after placing the order! simply the best all around!

Pros: Same memory that Apple puts in the machine, for a lot less money.

Cons: None.

Pros: Much cheaper than Apple. Hefty heatsink instills confidence. No problems after three weeks of heavy use.

Cons: Runs about 7-8C hotter than the 512MB sticks supplied by Apple. I assume this is because of the increased chip density on each module.

Overall Review: The MacPro memory & northbridge components always run hot. These modules run around 60C, which is well within spec. Nothing to worry about, but I'd make sure any memory upgrades you buy for the MacPro have quality heat sinks like this Cruical product does.

Pros: If you are looking at this wondering if this is the same ram that comes in the mac pro's. yes it is. It has the same micron stickers on it and the same heatsinks that come with the mac pro's standard. They are identical. There is no reason to pay apples price for this same ram.

Cons: have to order this ram here and save hundreds or thousands from apples insanely high price for identical item.

Overall Review: must install ram in pairs for mac pro. recommended to fill board A with two chips and board b with two chips, so consider getting two of these pairs (4 total 1GB sticks). For comparison Apple charges seven hundred for 4 1GB sticks product.