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GeForce GT 420 vs Radeon R7 M265

Intro

The GeForce GT 420 uses a 40 nm design. nVidia has set the core frequency at 700 MHz. The GDDR3 memory runs at a speed of 900 MHz on this card. It features 48 SPUs as well as 8 TAUs and 4 ROPs.

Compare all that to the Radeon R7 M265, which makes use of a 28 nm design. AMD has clocked the core frequency at 725 MHz. The DDR3 memory is set to run at a frequency of 1000 MHz on this model. It features 384 SPUs as well as 24 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R7 M265 should be 11% faster than the GeForce GT 420 in general, because of its greater data rate. (explain)

Radeon R7 M265 32000 MB/sec
GeForce GT 420 28800 MB/sec
Difference: 3200 (11%)

Texel Rate

The Radeon R7 M265 is quite a bit (about 211%) more effective at texture filtering than the GeForce GT 420. (explain)

Radeon R7 M265 17400 Mtexels/sec
GeForce GT 420 5600 Mtexels/sec
Difference: 11800 (211%)

Pixel Rate

The Radeon R7 M265 should be quite a bit (about 107%) more effective at anti-aliasing than the GeForce GT 420, and should be able to handle higher resolutions better. (explain)

Radeon R7 M265 5800 Mpixels/sec
GeForce GT 420 2800 Mpixels/sec
Difference: 3000 (107%)

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 R7 M265

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 R7 M265
Manufacturer nVidia AMD
Year September 2010 May 1 2014
Code Name GF108 Opal XT
Memory 2048 MB 2048 MB
Core Speed 700 MHz 725 MHz
Memory Speed 1800 MHz 2000 MHz
Power (Max TDP) 50 watts (Unknown) watts
Bandwidth 28800 MB/sec 32000 MB/sec
Texel Rate 5600 Mtexels/sec 17400 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 5800 Mpixels/sec
Unified Shaders 48 384
Texture Mapping Units 8 24
Render Output Units 4 8
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 x8
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video 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 the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GT 420

Amazon.com

Check prices at:

Radeon R7 M265

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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