PMI PC-4200 Turbo Memory

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Under the Heat Spreader

Hyper X - detail

Once I removed the heat spreaders I found one of the newest Hynix IC’s on the market for high speed memory modules — Hynix D5′s. The full part number was found to be HY5DU56822CT-D5. If you want to sound like an uber hardware specialist these are known as Hynix Revision “C” IC’s in the D5 speed grade. For those of you who don’t know, these are the first IC’s from Hynix in the TSOP form factor that are rated above 400MHz.

Actually, the D5 IC’s come rated at 500MHz, but with relaxed timings of 3-4-4.

We have seen these IC’s recently on many other brands modules with good success, so we have high hopes for PMI’s 4200 based on the IC selection.

Decoding The IC

For those of you that want to know the inside scoop on everything we broke down what the codes on the IC mean below. If you would like to do this on one of your personal modules or to double check us you can find the most current decoder right here on the Hynix site.

Hynix HY5DU56822CT-D5

Specification

Feature

HY

Hynix

5D

DDR I SDRAM

U

VDD=2.5V & VDDQ=2.5V

56

256M 8K Refresh

8

Organization = 8 x 32

2

4 Banks

2

Interface = SSTL_2

C

Revision Level #4

T

TSOP Package

D5

DDR500 3-4-4

Now that we know what the memory is rated to do and what exact IC’s are being used on the PMI PC-4200 memory kit we can look at our testing to see how it really performs.

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