Even though today was supposed to be AMD's day with the HD 4890 announcement, NVIDIA decided to crash their party. The NVIDIA GeForce GTX 275 was initially planned for April 9, but when the green camp realized they had a great card on their hands they changed the date to ensure editors had GTX 275 comparison numbers in their reviews.
The GeForce GTX 275 doesn't bring anything new to the table. It is basically half a GTX 295 running at 633 / 1134 / 1404 MHz (core/memory/shader). You can see it as a GeForce GTX 285 with a 448-bit memory interface, or you could see it as a GTX 260 with 240 shaders and higher clocks.
Zotac as one of NVIDIA's premier partners has built an Amp! Edition card that uses the reference design, but comes at higher clocks of 702 MHz core, 1260 MHz memory and 1512 MHz shader for a price increase of about $20.
|GeForce GTS |
250 1 GB
|Zotac GTX |
HD 4870 X2
|Shader units||128||128||192||800||800||240||240||240||2x 800||240|
|Memory Size||512 MB||1024 MB||896 MB||512 MB||1024 MB||896 MB||896 MB||1024 MB||2x 1024 MB||1024 MB|
|Memory Bus Width||256 bit||256 bit||448 bit||256 bit||256 bit||448 bit||448 bit||512 bit||2x 256 bit||512 bit|
|Core Clock||675 MHz||738 MHz||576 MHz||750 MHz||850 MHz||633 MHz||702 MHz||602 MHz||750 MHz||648 MHz|
|Memory Clock||1100 MHz||1100 MHz||999 MHz||900 MHz||975 MHz||1134 MHz||1260 MHz||1107 MHz||900 MHz||1242 MHz|