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GeForce GTX 260 Core 216 vs Radeon HD 4790

Intro

The GeForce GTX 260 Core 216 has a core clock frequency of 576 MHz and a GDDR3 memory frequency of 999 MHz. It also uses a 448-bit memory bus, and makes use of a 65 nm design. It is made up of 216 SPUs, 72 Texture Address Units, and 28 ROPs.

Compare those specs to the Radeon HD 4790, which features GPU clock speed of 600 MHz, and 512 MB of GDDR5 memory set to run at 800 MHz through a 256-bit bus. It also features 640(128x5) Stream Processors, 32 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GTX 260 Core 216 should theoretically be a little bit better than the Radeon HD 4790 in general. (explain)

GeForce GTX 260 Core 216 111888 MB/sec
Radeon HD 4790 102400 MB/sec
Difference: 9488 (9%)

Texel Rate

The GeForce GTX 260 Core 216 will be much (more or less 116%) better at anisotropic filtering than the Radeon HD 4790. (explain)

GeForce GTX 260 Core 216 41472 Mtexels/sec
Radeon HD 4790 19200 Mtexels/sec
Difference: 22272 (116%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 260 Core 216 is the winner, by far. (explain)

GeForce GTX 260 Core 216 16128 Mpixels/sec
Radeon HD 4790 9600 Mpixels/sec
Difference: 6528 (68%)

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 260 Core 216

Amazon.com

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Radeon HD 4790

Amazon.com

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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 260 Core 216 Radeon HD 4790
Manufacturer nVidia AMD
Year September 16, 2008 2009
Code Name G200 RV790
Memory 896 MB 512 MB
Core Speed 576 MHz 600 MHz
Memory Speed 1998 MHz 3200 MHz
Power (Max TDP) 202 watts (Unknown) watts
Bandwidth 111888 MB/sec 102400 MB/sec
Texel Rate 41472 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 9600 Mpixels/sec
Unified Shaders 216 640(128x5)
Texture Mapping Units 72 32
Render Output Units 28 16
Bus Type GDDR3 GDDR5
Bus Width 448-bit 256-bit
Fab Process 65 nm 55 nm
Transistors 1400 million 959 million
Bus PCIe x16 2.0 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX 260 Core 216

Amazon.com

Check prices at:

Radeon HD 4790

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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