Stelios
03-25-2007, 05:18 PM
After my XFX 8800GTX died , i changed it with one from BFG . XFX had black PCB , while BFG has green PCB . First thing i noticed was that the black and green 8800gtx have different memory.
The black one has GDDR3 from samsung ... Part number is : K4J52324Q
http://www.samsung.com/Products/Semiconductor/Support/ebrochure/memory/gddr3_060524.pdf
Samsung is rated at 1.8V and as you can read in Samsung's page , it goes up to 1Ghz
http://www.xtremesystems.org/forums/attachment.php?attachmentid=57126&stc=1&d=1174867903
Picture taken from here : http://www.overclockers.co.nz/ocnz/review.php?id=06vga00shootoutn8800gtsn8800gtx0307
Now ... regarding the green 8800gtx .... It has GDDR3 from Hynix . The part number is : HY5RS123235FP
http://www.hynix.com/datasheet/eng/graphics/graphics_sub.jsp?menu3=03&RK=14&RAM_NAME=GDDR3%20SDRAM&SUB_RAM=512Mb
This ram is rated at 2.2V and 1Ghz speed .
http://www.xtremesystems.org/forums/showthread.php?t=134267
http://i41.photobucket.com/albums/e265/philly_boy/Misc/Hynix-Memory-8800GTX-close.jpg
... You can imagine my face when i tried to vmod the card and i was reading 2.2Vddr with the trimmer to it's max resistance ... Now i know the reason !! :D :D
I don't know which memory is better , but i would feel more comfortable with the samsung and 1.8V stock ... Maybe it gives you more overclocking headroom cause you can get it up to 2.0V+ without issues ... Dunno ...
I have also seen some very good memory overclocks with the green PCB , like this one : http://www.overclock.net/attachments/nvidia/42161-official-8800gtx-gts-oc-thread-660-2590.jpg?d=1172448743
http://www.overclock.net/nvidia/136207-official-8800gtx-gts-oc-thread-21.html
What's your experience and thoughts ??
The black one has GDDR3 from samsung ... Part number is : K4J52324Q
http://www.samsung.com/Products/Semiconductor/Support/ebrochure/memory/gddr3_060524.pdf
Samsung is rated at 1.8V and as you can read in Samsung's page , it goes up to 1Ghz
http://www.xtremesystems.org/forums/attachment.php?attachmentid=57126&stc=1&d=1174867903
Picture taken from here : http://www.overclockers.co.nz/ocnz/review.php?id=06vga00shootoutn8800gtsn8800gtx0307
Now ... regarding the green 8800gtx .... It has GDDR3 from Hynix . The part number is : HY5RS123235FP
http://www.hynix.com/datasheet/eng/graphics/graphics_sub.jsp?menu3=03&RK=14&RAM_NAME=GDDR3%20SDRAM&SUB_RAM=512Mb
This ram is rated at 2.2V and 1Ghz speed .
http://www.xtremesystems.org/forums/showthread.php?t=134267
http://i41.photobucket.com/albums/e265/philly_boy/Misc/Hynix-Memory-8800GTX-close.jpg
... You can imagine my face when i tried to vmod the card and i was reading 2.2Vddr with the trimmer to it's max resistance ... Now i know the reason !! :D :D
I don't know which memory is better , but i would feel more comfortable with the samsung and 1.8V stock ... Maybe it gives you more overclocking headroom cause you can get it up to 2.0V+ without issues ... Dunno ...
I have also seen some very good memory overclocks with the green PCB , like this one : http://www.overclock.net/attachments/nvidia/42161-official-8800gtx-gts-oc-thread-660-2590.jpg?d=1172448743
http://www.overclock.net/nvidia/136207-official-8800gtx-gts-oc-thread-21.html
What's your experience and thoughts ??