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GeForce GT 420 vs Radeon R9 M375

Intro

The GeForce GT 420 makes use of a 40 nm design. nVidia has set the core frequency at 700 MHz. The GDDR3 memory runs at a frequency of 900 MHz on this specific model. It features 48 SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

Compare those specs to the Radeon R9 M375, which comes with GPU clock speed of 1015 MHz, and 4096 MB of DDR3 RAM running at 1100 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M375, in theory, should perform much faster than the GeForce GT 420 in general. (explain)

Radeon R9 M375 35200 MB/sec
GeForce GT 420 28800 MB/sec
Difference: 6400 (22%)

Texel Rate

The Radeon R9 M375 is much (more or less 625%) more effective at anisotropic filtering than the GeForce GT 420. (explain)

Radeon R9 M375 40600 Mtexels/sec
GeForce GT 420 5600 Mtexels/sec
Difference: 35000 (625%)

Pixel Rate

The Radeon R9 M375 is quite a bit (more or less 480%) better at anti-aliasing than the GeForce GT 420, and able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 M375 16240 Mpixels/sec
GeForce GT 420 2800 Mpixels/sec
Difference: 13440 (480%)

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 GT 420

Amazon.com

Check prices at:

Radeon R9 M375

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 GT 420 Radeon R9 M375
Manufacturer nVidia AMD
Year September 2010 2015
Code Name GF108 Cape Verde
Memory 2048 MB 4096 MB
Core Speed 700 MHz 1015 MHz
Memory Speed 1800 MHz 2200 MHz
Power (Max TDP) 50 watts (Unknown) watts
Bandwidth 28800 MB/sec 35200 MB/sec
Texel Rate 5600 Mtexels/sec 40600 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 16240 Mpixels/sec
Unified Shaders 48 640
Texture Mapping Units 8 40
Render Output Units 4 16
Bus Type GDDR3 DDR3
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 585 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core 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 in a second.

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

Display Prices

Hide Prices

GeForce GT 420

Amazon.com

Check prices at:

Radeon R9 M375

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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