GeForce 9400 GT 256MB vs Radeon R7 370 4G

Intro

Compare those specifications to the Radeon R7 370 4G, which makes use of a 28 nm design. AMD has clocked the core speed at 975 MHz. The GDDR5 RAM works at a speed of 1400 MHz on this card. It features 1024 SPUs along with 64 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9400 GT 256MB		50 Watts
Radeon R7 370 4G		110 Watts
	Difference: 60 Watts (120%)

Memory Bandwidth

Performance-wise, the Radeon R7 370 4G should in theory be quite a bit superior to the GeForce 9400 GT 256MB in general. (explain)

Radeon R7 370 4G		179200 MB/sec
GeForce 9400 GT 256MB		12800 MB/sec
	Difference: 166400 (1300%)

Texel Rate

The Radeon R7 370 4G is much (more or less 1318%) faster with regards to AF than the GeForce 9400 GT 256MB. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
GeForce 9400 GT 256MB		4400 Mtexels/sec
	Difference: 58000 (1318%)

Pixel Rate

The Radeon R7 370 4G should be quite a bit (approximately 1318%) more effective at anti-aliasing than the GeForce 9400 GT 256MB, and will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
GeForce 9400 GT 256MB		2200 Mpixels/sec
	Difference: 29000 (1318%)

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 data (in units of megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it should 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 texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.