GeForce 8400 GS 512MB vs Radeon R7 370 4G

Intro

Compare that to the Radeon R7 370 4G, which features GPU core speed of 975 MHz, and 4096 MB of GDDR5 RAM running at 1400 MHz through a 256-bit bus. It also features 1024 SPUs, 64 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8400 GS 512MB		40 Watts
Radeon R7 370 4G		110 Watts
	Difference: 70 Watts (175%)

Memory Bandwidth

In theory, the Radeon R7 370 4G should be 2700% quicker than the GeForce 8400 GS 512MB overall, due to its greater bandwidth. (explain)

Radeon R7 370 4G		179200 MB/sec
GeForce 8400 GS 512MB		6400 MB/sec
	Difference: 172800 (2700%)

Texel Rate

The Radeon R7 370 4G is a lot (approximately 1100%) faster with regards to AF than the GeForce 8400 GS 512MB. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
GeForce 8400 GS 512MB		5200 Mtexels/sec
	Difference: 57200 (1100%)

Pixel Rate

The Radeon R7 370 4G should be a lot (approximately 1100%) more effective at full screen anti-aliasing than the GeForce 8400 GS 512MB, and also will be able to handle higher resolutions more effectively. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
GeForce 8400 GS 512MB		2600 Mpixels/sec
	Difference: 28600 (1100%)

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 maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling 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 card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.