GeForce GTX 275 vs GeForce GTX 280

Intro

The GeForce GTX 275 uses a 55 nm design. nVidia has set the core frequency at 633 MHz. The GDDR3 RAM works at a frequency of 1134 MHz on this specific card. It features 240 SPUs along with 80 TAUs and 28 ROPs.

Compare those specs to the GeForce GTX 280, which comes with a core clock frequency of 602 MHz and a GDDR3 memory speed of 1107 MHz. It also makes use of a 512-bit bus, and uses a 65 nm design. It is comprised of 240 SPUs, 80 TAUs, and 32 ROPs.

Price Comparison

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce GTX 275 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

GeForce GTX 280 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 275	GeForce GTX 280
Manufacturer	nVidia	nVidia
Year	April 9, 2009	June 17, 2008
Code Name	G200b	G200
Fab Process	55 nm	65 nm
Bus	PCIe x16 2.0	PCIe x16 2.0
Memory	896 MB	1024 MB
Core Speed	633 MHz	602 MHz
Shader Speed	1404 MHz	1296 MHz
Memory Speed	1134 MHz	1107 MHz
Unified Shaders	240	240
Texture Mapping Units	80	80
Render Output Units	28	32
Bus Type	GDDR3	GDDR3
Bus Width	448-bit	512-bit
DirectX Version	DirectX 10	DirectX 10
OpenGL Version	OpenGL 3.1	OpenGL 3.1
Power (Max TDP)	219 watts	236 watts
Shader Model	4.0	4.0
Bandwidth	127008 MB/sec	141696 MB/sec
Texel Rate	50640 Mtexels/sec	48160 Mtexels/sec
Pixel Rate	17724 Mpixels/sec	19264 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.