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GeForce GTX 465 vs Radeon HD 7790

Intro

The GeForce GTX 465 has a GPU clock speed of 607 MHz, and the 1024 MB of GDDR5 memory is set to run at 802 MHz through a 256-bit bus. It also is comprised of 352 SPUs, 44 TAUs, and 32 ROPs.

Compare that to the Radeon HD 7790, which uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory is set to run at a frequency of 1500 MHz on this particular card. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator 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

As far as performance goes, the GeForce GTX 465 should in theory be a small bit superior to the Radeon HD 7790 overall. (explain)

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

Texel Rate

The Radeon HD 7790 should be quite a bit (about 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

The GeForce GTX 465 will be a lot (approximately 21%) faster with regards to full screen anti-aliasing than the Radeon HD 7790, and able to handle higher screen resolutions without losing too much performance. (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 max amount of data (in units of MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 are applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the 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 number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max 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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