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GeForce GTX 285 1GB vs Radeon HD 4670 512MB


Intro

The GeForce GTX 285 1GB has a GPU clock speed of 648 MHz, and the 1024 MB of GDDR3 RAM runs at 1242 MHz through a 512-bit bus. It also features 240 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon HD 4670 512MB, which comes with a core clock speed of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory frequency of 1000 MHz. It also features a 128-bit memory bus, and uses a 55 nm design. It is made up of 320(64x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB 70 Watts
GeForce GTX 285 1GB 204 Watts
Difference: 134 Watts (191%)

Memory Bandwidth

Theoretically, the GeForce GTX 285 1GB should be much faster than the Radeon HD 4670 512MB in general. (explain)

GeForce GTX 285 1GB 158976 MB/sec
Radeon HD 4670 512MB 32000 MB/sec
Difference: 126976 (397%)

Texel Rate

The GeForce GTX 285 1GB is much (about 116%) better at AF than the Radeon HD 4670 512MB. (explain)

GeForce GTX 285 1GB 51840 Mtexels/sec
Radeon HD 4670 512MB 24000 Mtexels/sec
Difference: 27840 (116%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 285 1GB is the winner, by a large margin. (explain)

GeForce GTX 285 1GB 20736 Mpixels/sec
Radeon HD 4670 512MB 6000 Mpixels/sec
Difference: 14736 (246%)

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

Display Prices

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GeForce GTX 285 1GB

Amazon.com

Radeon HD 4670 512MB

Amazon.com

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 1GB Radeon HD 4670 512MB
Manufacturer nVidia AMD
Year January 15, 2009 Sep 10, 2008
Code Name G200b RV730 XT
Memory 1024 MB 512 MB
Core Speed 648 MHz 750 MHz
Memory Speed 2484 MHz 2000 MHz
Power (Max TDP) 204 watts 70 watts
Bandwidth 158976 MB/sec 32000 MB/sec
Texel Rate 51840 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 6000 Mpixels/sec
Unified Shaders 240 320(64x5)
Texture Mapping Units 80 32
Render Output Units 32 8
Bus Type GDDR3 GDDR4/GDDR3/DDR3/DDR2
Bus Width 512-bit 128-bit
Fab Process 55 nm 55 nm
Transistors 1400 million 514 million
Bus PCIe x16 2.0 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many 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 1GB

Amazon.com

Radeon HD 4670 512MB

Amazon.com

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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