GeForce GT 420 vs Radeon R7 370 2G

Intro

Compare those specs to the Radeon R7 370 2G, which comes with a core clock frequency of 975 MHz and a GDDR5 memory frequency of 1400 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1024 SPUs, 64 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420		50 Watts
Radeon R7 370 2G		110 Watts
	Difference: 60 Watts (120%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 370 2G will be 522% faster than the GeForce GT 420 overall, due to its greater data rate. (explain)

Radeon R7 370 2G		179200 MB/sec
GeForce GT 420		28800 MB/sec
	Difference: 150400 (522%)

Texel Rate

The Radeon R7 370 2G is much (more or less 1014%) better at anisotropic filtering than the GeForce GT 420. (explain)

Radeon R7 370 2G		62400 Mtexels/sec
GeForce GT 420		5600 Mtexels/sec
	Difference: 56800 (1014%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R7 370 2G is superior to the GeForce GT 420, and very much so. (explain)

Radeon R7 370 2G		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: Bandwidth is the max amount of information (measured in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.