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GeForce GTX 280 vs GeForce GTX 285 1GB

Intro

The GeForce GTX 280 comes with a GPU clock speed of 602 MHz, and the 1024 MB of GDDR3 RAM is set to run at 1107 MHz through a 512-bit bus. It also features 240 SPUs, 80 TAUs, and 32 Raster Operation Units.

Compare all of that to the GeForce GTX 285 1GB, which has a core clock frequency of 648 MHz and a GDDR3 memory speed of 1242 MHz. It also features a 512-bit bus, and uses a 55 nm design. It is made up of 240 SPUs, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 1GB 204 Watts
GeForce GTX 280 236 Watts
Difference: 32 Watts (16%)

Memory Bandwidth

The GeForce GTX 285 1GB should theoretically perform a bit faster than the GeForce GTX 280 overall. (explain)

GeForce GTX 285 1GB 158976 MB/sec
GeForce GTX 280 141696 MB/sec
Difference: 17280 (12%)

Texel Rate

The GeForce GTX 285 1GB will be a small bit (more or less 8%) better at AF than the GeForce GTX 280. (explain)

GeForce GTX 285 1GB 51840 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 3680 (8%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 285 1GB is a better choice, not by a very large margin though. (explain)

GeForce GTX 285 1GB 20736 Mpixels/sec
GeForce GTX 280 19264 Mpixels/sec
Difference: 1472 (8%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce GTX 280

Amazon.com

Check prices at:

GeForce GTX 285 1GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 280 GeForce GTX 285 1GB
Manufacturer nVidia nVidia
Year June 17, 2008 January 15, 2009
Code Name G200 G200b
Memory 1024 MB 1024 MB
Core Speed 602 MHz 648 MHz
Memory Speed 2214 MHz 2484 MHz
Power (Max TDP) 236 watts 204 watts
Bandwidth 141696 MB/sec 158976 MB/sec
Texel Rate 48160 Mtexels/sec 51840 Mtexels/sec
Pixel Rate 19264 Mpixels/sec 20736 Mpixels/sec
Unified Shaders 240 240
Texture Mapping Units 80 80
Render Output Units 32 32
Bus Type GDDR3 GDDR3
Bus Width 512-bit 512-bit
Fab Process 65 nm 55 nm
Transistors 1400 million 1400 million
Bus PCIe x16 2.0 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.1 OpenGL 3.1

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling 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 can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 280

Amazon.com

Check prices at:

GeForce GTX 285 1GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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