What kind of GDDR memory is this?

Hi,

I took off my graphic card's heatsink and now i'm curious if someone knows what this means:

HYB18T25632H-20

I can assume that 256 means 256Mb , and 32 means 32*8 configuration of chips, but i can't find any other info about it.

So if anyone can help me out i'd really appreciate if

HYB = Infineon memory
18 = Supply voltage (1.8V)
T = Memory type (GDDR2)
256 = DRAM density (256Mbit)
32 = Chip organization (8x32, not 32x8)
H = ?
20 = speed bin (500MHz / DDR1000)

THANX

Now that answered one of my questions, but i'm still wondering why this memory refuses to work on anything over 750Mhz DDR?

Is there any tool out there which i can use to read what my memory voltage is?

and again... THANX i was trying to find this info for 6 months now

Most likely it's the GPU's internal memory controller that doesn't scale higher than DDR750.

There's no way to read the memory voltage by software. You need a multimeter.

btw, on what graphics card you found these chips?