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GeForce GTX 465 vs Radeon HD 7790

Intro

The GeForce GTX 465 makes use of a 40 nm design. nVidia has clocked the core frequency at 607 MHz. The GDDR5 memory is set to run at a speed of 802 MHz on this model. It features 352 SPUs as well as 44 TAUs and 32 ROPs.

Compare all of that to the Radeon HD 7790, which has a clock frequency of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It features 896 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790 85 Watts
GeForce GTX 465 200 Watts
Difference: 115 Watts (135%)

Memory Bandwidth

The GeForce GTX 465 should in theory perform a bit faster than the Radeon HD 7790 in general. (explain)

GeForce GTX 465 102592 MB/sec
Radeon HD 7790 96000 MB/sec
Difference: 6592 (7%)

Texel Rate

The Radeon HD 7790 is a lot (more or less 110%) more effective at texture filtering than the GeForce GTX 465. (explain)

Radeon HD 7790 56000 Mtexels/sec
GeForce GTX 465 26708 Mtexels/sec
Difference: 29292 (110%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 465 is the winner, by a large margin. (explain)

GeForce GTX 465 19424 Mpixels/sec
Radeon HD 7790 16000 Mpixels/sec
Difference: 3424 (21%)

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 465

Amazon.com

Check prices at:

Radeon HD 7790

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 465 Radeon HD 7790
Manufacturer nVidia AMD
Year May 2010 March 2013
Code Name GF100 Bonaire XT
Memory 1024 MB 1024 MB
Core Speed 607 MHz 1000 MHz
Memory Speed 3208 MHz 6000 MHz
Power (Max TDP) 200 watts 85 watts
Bandwidth 102592 MB/sec 96000 MB/sec
Texel Rate 26708 Mtexels/sec 56000 Mtexels/sec
Pixel Rate 19424 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 352 896
Texture Mapping Units 44 56
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 3000 million 2080 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, 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 worked out by multiplying the total 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip 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 Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 465

Amazon.com

Check prices at:

Radeon HD 7790

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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