Radeon HD 4850 1GB vs Radeon R7 370 4G

Intro

Compare all that to the Radeon R7 370 4G, which has GPU core speed of 975 MHz, and 4096 MB of GDDR5 memory set to run at 1400 MHz through a 256-bit bus. It also features 1024 Stream Processors, 64 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Performance-wise, the Radeon R7 370 4G should in theory be quite a bit superior to the Radeon HD 4850 1GB in general. (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 is quite a bit (more or less 150%) more effective 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 a better choice, by far. (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: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's 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 texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, 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 number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs 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 fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.