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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 clocked the core speed at 700 MHz. The GDDR3 RAM runs at a speed of 900 MHz on this card. It features 48 SPUs along with 8 TAUs and 4 Rasterization Operator Units.

Compare those specifications to the Radeon R9 M375, which has GPU clock speed of 1015 MHz, and 4096 MB of DDR3 memory running at 1100 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M375 will be 22% faster than the GeForce GT 420 overall, because of its higher bandwidth. (explain)

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

Texel Rate

The Radeon R9 M375 is quite a bit (approximately 625%) faster with regards to AF 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 a lot (approximately 480%) more effective at full screen anti-aliasing than the GeForce GT 420, and also should be capable of handling higher screen resolutions while still performing well. (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: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has 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 better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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

Display Prices

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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.

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