InSuboRd
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Re:Who saw or owns a GeForce 7900 GTO card...? - 2006/10/07 21:18
From a member on the EVGA forums. So, they are indeed all Samsung based GDDR3 based GTX cards with the memory at a lower voltage and subsequent lower memory clock. There are three speeds just like the GTX card (3D, throttle and 2D) and they use the 50MHz Delta as the GTX does. So, pure GTX with the RAM slowed down a tad. One other item. The memory timings. Looks like they have tightened things up versus the GTX.
Comparison Memory Timings...
timing-----------GTX---------GTO---------BJ11---------BC14
tRAS-------------24------------22------------25-------------22
tRC---------------34------------31------------35-------------31
tRFC-------------43------------39------------45-------------39
tRCDR-----------12------------10-----------12-------------10
tRCDW-----------8-------------6-------------8---------------6
tRP---------------10-------------9------------10--------------9
tRRD--------------8------------10------------8---------------8
So, looks like 1.1ns GDDR3 may be on there, but, since it only has the 1.4ns voltage specifications (1.7V min, 1.8V spec, 1.9V max) versus the 1.1ns voltage specifications (1.9V min, 2.0V spec, 2.1V max), the timings have been adjusted accordingly to 1.4ns just like the GT cards.
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