GeForce GT 420 vs Radeon R7 370 4G

Intro

Compare those specifications to the Radeon R7 370 4G, which uses a 28 nm design. AMD has set the core frequency at 975 MHz. The GDDR5 memory works at a speed of 1400 MHz on this model. It features 1024 SPUs as well as 64 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420		50 Watts
Radeon R7 370 4G		110 Watts
	Difference: 60 Watts (120%)

Memory Bandwidth

As far as performance goes, the Radeon R7 370 4G should theoretically be a lot better than the GeForce GT 420 overall. (explain)

Radeon R7 370 4G		179200 MB/sec
GeForce GT 420		28800 MB/sec
	Difference: 150400 (522%)

Texel Rate

The Radeon R7 370 4G should be quite a bit (more or less 1014%) better at AF than the GeForce GT 420. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
GeForce GT 420		5600 Mtexels/sec
	Difference: 56800 (1014%)

Pixel Rate

The Radeon R7 370 4G should be much (more or less 1014%) more effective at AA than the GeForce GT 420, and will be able to handle higher resolutions better. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
GeForce GT 420		2800 Mpixels/sec
	Difference: 28400 (1014%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.