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GeForce GTX 650 vs Radeon R9 M380

Intro

The GeForce GTX 650 makes use of a 28 nm design. nVidia has set the core frequency at 1058 MHz. The GDDR5 memory works at a frequency of 1250 MHz on this specific model. It features 384 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Compare those specifications to the Radeon R9 M380, which comes with a core clock speed of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 M380 should be a bit faster than the GeForce GTX 650 overall. (explain)

Radeon R9 M380 96000 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 16000 (20%)

Texel Rate

The Radeon R9 M380 is a little bit (more or less 18%) more effective at AF than the GeForce GTX 650. (explain)

Radeon R9 M380 40000 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 6144 (18%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 650 is a better choice, not by a very large margin though. (explain)

GeForce GTX 650 16928 Mpixels/sec
Radeon R9 M380 16000 Mpixels/sec
Difference: 928 (6%)

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 650

Amazon.com

Check prices at:

Radeon R9 M380

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 650 Radeon R9 M380
Manufacturer nVidia AMD
Year September 2012 2015
Code Name GK107 Cape Verde
Memory 1024 MB 4096 MB
Core Speed 1058 MHz 1000 MHz
Memory Speed 5000 MHz 6000 MHz
Power (Max TDP) 64 watts (Unknown) watts
Bandwidth 80000 MB/sec 96000 MB/sec
Texel Rate 33856 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 384 640
Texture Mapping Units 32 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 1300 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video 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 that the graphics card can possibly write to the 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 card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 650

Amazon.com

Check prices at:

Radeon R9 M380

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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