what is the difference between these two memory chips?

why is there such a big price difference?

CORSAIR MEMORY CM64SD256-2700CX2H C2 256MB PC2700 DDR RAM 333MHz - OEM CM64SD256-2700CX2H. DDR, PC2700 32x64, Non-ECC, 184-Pin, CAS2 -Unbuffered Requires DDR supported Motherboard - Lifetime Warranty. Model#: CM64SD256-2700CX2H Fedex Saver Shipping $6.00
Detail Specs - Product Link (limit 5 per customer)

-See It! (N82E16820145400)
Save $5 when you buy this item with INTEL CELERON 950MHz SOCKET 370 FCPGA CPU
Save $5 when you buy this item with AMD 1600+/266 FSB Athlon XP PROCESSOR CPU - OEM
$150.00
YES


KINGMAX DDR333 PC-2700 256MB-OEM Fedex Saver Shipping $6.00
Detail Specs - Product Link (limit 10 per customer)

-See It! (N82E16820156001)
$77.00
NO

Corsair is expensive like mushkin is compared to other brands.
Even the corsair 2400xms is $100.

Someone I know is testing the corsair 2700 as I type this and then I can post back if you want when he finishes how it does compared to the kingmax 2700.

someone said that corsair tends to handle overvolting better. I'm curious to see the comparison with the Kingmax.

Test's were both done on Iwill xp-333-r rev 2.1.
Both memory set to 2.8v (the max for the board).
3dmark 2001 was run twice with setting's to test stability.

Corsair 2700xms-Max speed cas 2=170mhz.


Kingmax 2700 with the 5ns chips-Max speed cas 2=175mhz.