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GeForce GTX 660 vs Radeon HD 3470 512MB

Intro

The GeForce GTX 660 comes with a GPU clock speed of 980 MHz, and the 2048 MB of GDDR5 memory runs at 1502 MHz through a 192-bit bus. It also is made up of 960 Stream Processors, 80 Texture Address Units, and 24 ROPs.

Compare those specs to the Radeon HD 3470 512MB, which makes use of a 55 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR3 RAM is set to run at a speed of 950 MHz on this card. It features 40(8x5) SPUs along with 4 TAUs and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 660 should perform a lot faster than the Radeon HD 3470 512MB overall. (explain)

GeForce GTX 660 144192 MB/sec
Radeon HD 3470 512MB 30400 MB/sec
Difference: 113792 (374%)

Texel Rate

The GeForce GTX 660 will be quite a bit (approximately 2350%) faster with regards to AF than the Radeon HD 3470 512MB. (explain)

GeForce GTX 660 78400 Mtexels/sec
Radeon HD 3470 512MB 3200 Mtexels/sec
Difference: 75200 (2350%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 660 is superior to the Radeon HD 3470 512MB, by a large margin. (explain)

GeForce GTX 660 23520 Mpixels/sec
Radeon HD 3470 512MB 3200 Mpixels/sec
Difference: 20320 (635%)

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 660

Amazon.com

Check prices at:

Radeon HD 3470 512MB

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 660 Radeon HD 3470 512MB
Manufacturer nVidia AMD
Year September 2012 2008
Code Name GK106 RV620 PRO
Memory 2048 MB 512 MB
Core Speed 980 MHz 800 MHz
Memory Speed 6008 MHz 1900 MHz
Power (Max TDP) 140 watts (Unknown) watts
Bandwidth 144192 MB/sec 30400 MB/sec
Texel Rate 78400 Mtexels/sec 3200 Mtexels/sec
Pixel Rate 23520 Mpixels/sec 3200 Mpixels/sec
Unified Shaders 960 40(8x5)
Texture Mapping Units 80 4
Render Output Units 24 4
Bus Type GDDR5 GDDR3
Bus Width 192-bit 128-bit
Fab Process 28 nm 55 nm
Transistors 2540 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 2.0 x16
DirectX Version DirectX 11.0 DirectX 10.1
OpenGL Version OpenGL 4.3 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GTX 660

Amazon.com

Check prices at:

Radeon HD 3470 512MB

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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