GeForce GT 420 vs Radeon R5 M330

Intro

Compare that to the Radeon R5 M330, which has core speeds of 1030 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 RAM. It features 320 SPUs along with 20 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GT 420 should in theory be much faster than the Radeon R5 M330 overall. (explain)

GeForce GT 420		28800 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 14400 (100%)

Texel Rate

The Radeon R5 M330 is a lot (about 268%) more effective at AF than the GeForce GT 420. (explain)

Radeon R5 M330		20600 Mtexels/sec
GeForce GT 420		5600 Mtexels/sec
	Difference: 15000 (268%)

Pixel Rate

The Radeon R5 M330 will be much (about 194%) better at full screen anti-aliasing than the GeForce GT 420, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R5 M330		8240 Mpixels/sec
GeForce GT 420		2800 Mpixels/sec
	Difference: 5440 (194%)

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 largest amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are 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 higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.