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GeForce GTX 660 vs Radeon R9 380 4G

Intro

The GeForce GTX 660 comes with a core clock frequency of 980 MHz and a GDDR5 memory frequency of 1502 MHz. It also makes use of a 192-bit bus, and makes use of a 28 nm design. It is made up of 960 SPUs, 80 Texture Address Units, and 24 Raster Operation Units.

Compare those specs to the Radeon R9 380 4G, which features a core clock frequency of 970 MHz and a GDDR5 memory frequency of 1425 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is comprised of 1792 SPUs, 112 TAUs, and 32 Raster Operation 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

Radeon R9 380 4G 8837 points
GeForce GTX 660 5063 points
Difference: 3774 (75%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 140 Watts
Radeon R9 380 4G 190 Watts
Difference: 50 Watts (36%)

Memory Bandwidth

In theory, the Radeon R9 380 4G will be 26% quicker than the GeForce GTX 660 overall, because of its greater bandwidth. (explain)

Radeon R9 380 4G 182400 MB/sec
GeForce GTX 660 144192 MB/sec
Difference: 38208 (26%)

Texel Rate

The Radeon R9 380 4G will be much (more or less 39%) faster with regards to texture filtering than the GeForce GTX 660. (explain)

Radeon R9 380 4G 108640 Mtexels/sec
GeForce GTX 660 78400 Mtexels/sec
Difference: 30240 (39%)

Pixel Rate

The Radeon R9 380 4G will be quite a bit (approximately 32%) better at full screen anti-aliasing than the GeForce GTX 660, and also able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 380 4G 31040 Mpixels/sec
GeForce GTX 660 23520 Mpixels/sec
Difference: 7520 (32%)

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 R9 380 4G

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 R9 380 4G
Manufacturer nVidia AMD
Year September 2012 June 2015
Code Name GK106 Antigua PRO
Memory 2048 MB 4096 MB
Core Speed 980 MHz 970 MHz
Memory Speed 6008 MHz 5700 MHz
Power (Max TDP) 140 watts 190 watts
Bandwidth 144192 MB/sec 182400 MB/sec
Texel Rate 78400 Mtexels/sec 108640 Mtexels/sec
Pixel Rate 23520 Mpixels/sec 31040 Mpixels/sec
Unified Shaders 960 1792
Texture Mapping Units 80 112
Render Output Units 24 32
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2540 million 5000 million
Bus PCIe 3.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 11.0 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the 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 R9 380 4G

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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