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GeForce GTX 285 2GB vs Radeon HD 5830

Intro

The GeForce GTX 285 2GB makes use of a 55 nm design. nVidia has set the core frequency at 648 MHz. The GDDR3 RAM works at a frequency of 1242 MHz on this card. It features 240 SPUs along with 80 Texture Address Units and 32 ROPs.

Compare all that to the Radeon HD 5830, which uses a 40 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this particular card. It features 1120(224x5) SPUs along with 56 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830 175 Watts
GeForce GTX 285 2GB 204 Watts
Difference: 29 Watts (17%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 285 2GB should in theory be much better than the Radeon HD 5830 in general. (explain)

GeForce GTX 285 2GB 158976 MB/sec
Radeon HD 5830 128000 MB/sec
Difference: 30976 (24%)

Texel Rate

The GeForce GTX 285 2GB is a bit (about 16%) faster with regards to texture filtering than the Radeon HD 5830. (explain)

GeForce GTX 285 2GB 51840 Mtexels/sec
Radeon HD 5830 44800 Mtexels/sec
Difference: 7040 (16%)

Pixel Rate

The GeForce GTX 285 2GB should be a lot (more or less 62%) faster with regards to FSAA than the Radeon HD 5830, and will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 285 2GB 20736 Mpixels/sec
Radeon HD 5830 12800 Mpixels/sec
Difference: 7936 (62%)

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 285 2GB

Amazon.com

Check prices at:

Radeon HD 5830

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 285 2GB Radeon HD 5830
Manufacturer nVidia AMD
Year January 15, 2009 February 25, 2010
Code Name G200b Cypress LE
Memory 2048 MB 1024 MB
Core Speed 648 MHz 800 MHz
Memory Speed 2484 MHz 4000 MHz
Power (Max TDP) 204 watts 175 watts
Bandwidth 158976 MB/sec 128000 MB/sec
Texel Rate 51840 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 240 1120(224x5)
Texture Mapping Units 80 56
Render Output Units 32 16
Bus Type GDDR3 GDDR5
Bus Width 512-bit 256-bit
Fab Process 55 nm 40 nm
Transistors 1400 million 2154 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 285 2GB

Amazon.com

Check prices at:

Radeon HD 5830

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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