Radeon HD 4850 1GB vs Radeon R7 370 4G

Intro

Compare that to the Radeon R7 370 4G, which comes with core clock speeds of 975 MHz on the GPU, and 1400 MHz on the 4096 MB of GDDR5 memory. It features 1024 SPUs along with 64 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The Radeon R7 370 4G should theoretically be a lot faster than the Radeon HD 4850 1GB overall. (explain)

Radeon R7 370 4G		179200 MB/sec
Radeon HD 4850 1GB		63552 MB/sec
	Difference: 115648 (182%)

Texel Rate

The Radeon R7 370 4G should be much (about 150%) better at anisotropic filtering than the Radeon HD 4850 1GB. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
Radeon HD 4850 1GB		25000 Mtexels/sec
	Difference: 37400 (150%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R7 370 4G is the winner, and very much so. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
Radeon HD 4850 1GB		10000 Mpixels/sec
	Difference: 21200 (212%)

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 maximum amount of information (in units of MB per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. 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 many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.