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GeForce GTX 470 vs Radeon HD 6790

Intro

The GeForce GTX 470 uses a 40 nm design. nVidia has clocked the core frequency at 607 MHz. The GDDR5 memory works at a frequency of 837 MHz on this particular model. It features 448 SPUs along with 56 TAUs and 40 Rasterization Operator Units.

Compare all that to the Radeon HD 6790, which makes use of a 40 nm design. AMD has set the core speed at 840 MHz. The GDDR5 RAM works at a frequency of 1050 MHz on this specific model. It features 800 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 470 2937 points
Radeon HD 6790 2150 points
Difference: 787 (37%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790 150 Watts
GeForce GTX 470 215 Watts
Difference: 65 Watts (43%)

Memory Bandwidth

In theory, the Radeon HD 6790 should be a little bit faster than the GeForce GTX 470 overall. (explain)

Radeon HD 6790 134400 MB/sec
GeForce GTX 470 133920 MB/sec
Difference: 480 (0%)

Texel Rate

The GeForce GTX 470 should be a small bit (approximately 1%) faster with regards to texture filtering than the Radeon HD 6790. (explain)

GeForce GTX 470 33992 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 392 (1%)

Pixel Rate

The GeForce GTX 470 is quite a bit (approximately 81%) faster with regards to anti-aliasing than the Radeon HD 6790, and also will be able to handle higher resolutions better. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 10840 (81%)

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 470

Amazon.com

Check prices at:

Radeon HD 6790

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 470 Radeon HD 6790
Manufacturer nVidia AMD
Year March 2010 April 2011
Code Name GF100 Barts LE
Memory 1280 MB 1024 MB
Core Speed 607 MHz 840 MHz
Memory Speed 3348 MHz 4200 MHz
Power (Max TDP) 215 watts 150 watts
Bandwidth 133920 MB/sec 134400 MB/sec
Texel Rate 33992 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 448 800
Texture Mapping Units 56 40
Render Output Units 40 16
Bus Type GDDR5 GDDR5
Bus Width 320-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 3000 million 1700 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX 470

Amazon.com

Check prices at:

Radeon HD 6790

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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