hmmmm 50% off?

but a $55 rebate, from buy.com, your call...

These modules are complete and utter crap for two reasons:

1) They are rated at 2.2 volts. If you actually run them at that voltage or a higher voltage 24/7, one and eventually both will burn out within a matter of months.
2) The reason they are rated at that voltage is because they failed the JEDEC DDR2 1.8 volt standard test. RAM manufacturers don't want to throw out modules that fail, so they overvolt them and then rate them higher. However, their lifetime decreases, as a result, and at the specified voltage, it decreases to months, not years.

Most memory has a lifetime warranty so I wouldn't worry about failure. However, at 2.2V this is going to run HOT and won't run in many motherboards that require the 1.8V standard. Back in the day Kingston ValueRAM used to be the cheapest memory around, but because it always meets JEDEC standards, it has been some of the most expensive PC6400 memory for over a year. Get some memory that runs at 1.8V for about $70 instead of this.

i have the LANFEST version of these modules and they run at 1.85v or so the mobo says... i haven't tried to OC them yet but i will try eventually...

true #2 is necessary, but ram is cheaper now

When you consider several returns, at $7 a pop for shipping, a lifetime warranty sure doesn't sound too great.

#3 is wrong. They aren't rated at 2.2V because they failed testing at 1.8V. They are rated at 2.2V because that's the only way to get 4-12 timing with reasonable yield and is why Crucial sells these as a performance oriented memory.

The JEDEC standard for DDR2-800 is CL=5. Anyone who sells a 1.8V CL=4 PC2-6400 DIMM is just pushing the memory, because none of the SDRAM manufacturers sells DDR2-800 components at CL=4, including Samsung. Go look at the data sheets and see for yourself!

#4 - This memory runs fine in standard motherboards, because the SPD EEPROM is programmed for CL=5 and 1.8V. I'm running them now on an Intel DP965LTCK which does not support anything other than 1.8V. Simply put, the SPD EEPROM on these modules is programmed like it would be for any PC2-6400 DIMM using JEDEC DDR2-800 compliant components.

The only way you can run them at CL=4 is if you manually adjust the memory timing in your BIOS or if you have a motherboard that recognizes the Corsair-developed Enhanced Performance Profiles. The SPD EEPROMs on these DIMMs do have an EPP, but almost no motherboards support EPP, so it's really a useless spec that Corsair pushes along with Nvidia to con people into buying more expensive memories than necessary.

BTW, I don't care about the EPP stuff. I just wanted a good set of DIMMs from a reliable manufacturer, and earlier this year, these Crucial Ballistix kits had more competitive pricing than any other PC2-6400 kits.