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GeForce GTX 460 (OEM) vs Radeon HD 4790

Intro

The GeForce GTX 460 (OEM) comes with clock speeds of 650 MHz on the GPU, and 850 MHz on the 1024 MB of GDDR5 RAM. It features 336 SPUs along with 56 TAUs and 32 Rasterization Operator Units.

Compare those specifications to the Radeon HD 4790, which has a core clock frequency of 600 MHz and a GDDR5 memory frequency of 800 MHz. It also uses a 256-bit memory bus, and uses a 55 nm design. It is comprised of 640(128x5) SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 (OEM) will be 6% faster than the Radeon HD 4790 overall, due to its greater data rate. (explain)

GeForce GTX 460 (OEM) 108800 MB/sec
Radeon HD 4790 102400 MB/sec
Difference: 6400 (6%)

Texel Rate

The GeForce GTX 460 (OEM) should be a lot (about 90%) better at anisotropic filtering than the Radeon HD 4790. (explain)

GeForce GTX 460 (OEM) 36400 Mtexels/sec
Radeon HD 4790 19200 Mtexels/sec
Difference: 17200 (90%)

Pixel Rate

The GeForce GTX 460 (OEM) will be much (more or less 117%) faster with regards to anti-aliasing than the Radeon HD 4790, and will be able to handle higher resolutions better. (explain)

GeForce GTX 460 (OEM) 20800 Mpixels/sec
Radeon HD 4790 9600 Mpixels/sec
Difference: 11200 (117%)

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 460 (OEM)

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 460 (OEM) Radeon HD 4790
Manufacturer nVidia AMD
Year October 2010 2009
Code Name GF104 RV790
Memory 1024 MB 512 MB
Core Speed 650 MHz 600 MHz
Memory Speed 3400 MHz 3200 MHz
Power (Max TDP) 150 watts (Unknown) watts
Bandwidth 108800 MB/sec 102400 MB/sec
Texel Rate 36400 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 20800 Mpixels/sec 9600 Mpixels/sec
Unified Shaders 336 640(128x5)
Texture Mapping Units 56 32
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1950 million 959 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 are applied in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 460 (OEM)

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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