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GeForce GTX 260 Core 216 vs Radeon HD 4790

Intro

The GeForce GTX 260 Core 216 comes with core speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 memory. It features 216 SPUs as well as 72 TAUs and 28 Rasterization Operator Units.

Compare all that to the Radeon HD 4790, which comes with a clock speed of 600 MHz and a GDDR5 memory speed of 800 MHz. It also features a 256-bit bus, and uses a 55 nm design. It is comprised of 640(128x5) SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 260 Core 216 should in theory perform a bit faster 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 is a lot (more or less 116%) better at texture 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 high levels of AA is important to you, then the GeForce GTX 260 Core 216 is a better choice, and very much so. (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

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.

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 data (in units of megabytes per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

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