GeForce GTX 285 2GB vs GeForce GTX 480

Intro

The GeForce GTX 285 2GB features a core clock frequency of 648 MHz and a GDDR3 memory speed of 1242 MHz. It also makes use of a 512-bit memory bus, and uses a 55 nm design. It is made up of 240 SPUs, 80 TAUs, and 32 Raster Operation Units.

Compare all of that to the GeForce GTX 480, which has core clock speeds of 700 MHz on the GPU, and 924 MHz on the 1536 MB of GDDR5 memory. It features 480 SPUs along with 60 Texture Address Units and 48 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 285 2GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

GeForce GTX 480 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 285 2GB	GeForce GTX 480
Manufacturer	nVidia	nVidia
Year	January 15, 2009	March 2010
Code Name	G200b	GF100
Fab Process	55 nm	40 nm
Bus	PCIe x16 2.0	PCIe x16
Memory	2048 MB	1536 MB
Core Speed	648 MHz	700 MHz
Shader Speed	1476 MHz	1401 MHz
Memory Speed	1242 MHz	924 MHz
Unified Shaders	240	480
Texture Mapping Units	80	60
Render Output Units	32	48
Bus Type	GDDR3	GDDR5
Bus Width	512-bit	384-bit
DirectX Version	DirectX 10	DirectX 11
OpenGL Version	OpenGL 3.1	OpenGL 4.1
Power (Max TDP)	204 watts	250 watts
Shader Model	4.0	5.0
Bandwidth	158976 MB/sec	177408 MB/sec
Texel Rate	51840 Mtexels/sec	42000 Mtexels/sec
Pixel Rate	20736 Mpixels/sec	33600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.