Radeon HD 4890 1GB vs Radeon R7 370 2G

Intro

Compare all that to the Radeon R7 370 2G, which comes with clock speeds of 975 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1024 SPUs as well as 64 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 2G		110 Watts
Radeon HD 4890 1GB		190 Watts
	Difference: 80 Watts (73%)

Memory Bandwidth

Performance-wise, the Radeon R7 370 2G should theoretically be quite a bit better than the Radeon HD 4890 1GB in general. (explain)

Radeon R7 370 2G		179200 MB/sec
Radeon HD 4890 1GB		124800 MB/sec
	Difference: 54400 (44%)

Texel Rate

The Radeon R7 370 2G should be much (approximately 56%) better at anisotropic filtering than the Radeon HD 4890 1GB. (explain)

Radeon R7 370 2G		62400 Mtexels/sec
Radeon HD 4890 1GB		40000 Mtexels/sec
	Difference: 22400 (56%)

Pixel Rate

The Radeon R7 370 2G will be quite a bit (more or less 95%) better at FSAA than the Radeon HD 4890 1GB, and also capable of handling higher screen resolutions while still performing well. (explain)

Radeon R7 370 2G		31200 Mpixels/sec
Radeon HD 4890 1GB		16000 Mpixels/sec
	Difference: 15200 (95%)

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 one second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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.