Radeon HD 4850 X2 512MB vs Radeon R7 370 2G

Intro

Compare those specs to the Radeon R7 370 2G, which uses a 28 nm design. AMD has clocked the core frequency at 975 MHz. The GDDR5 RAM works at a speed of 1400 MHz on this particular model. 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)

Radeon R7 370 2G		110 Watts
Radeon HD 4850 X2 512MB		250 Watts
	Difference: 140 Watts (127%)

Memory Bandwidth

As far as performance goes, the Radeon R7 370 2G should theoretically be quite a bit superior to the Radeon HD 4850 X2 512MB overall. (explain)

Radeon R7 370 2G		179200 MB/sec
Radeon HD 4850 X2 512MB		127104 MB/sec
	Difference: 52096 (41%)

Texel Rate

The Radeon R7 370 2G will be much (approximately 25%) faster with regards to texture filtering than the Radeon HD 4850 X2 512MB. (explain)

Radeon R7 370 2G		62400 Mtexels/sec
Radeon HD 4850 X2 512MB		50000 Mtexels/sec
	Difference: 12400 (25%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R7 370 2G is the winner, by a large margin. (explain)

Radeon R7 370 2G		31200 Mpixels/sec
Radeon HD 4850 X2 512MB		20000 Mpixels/sec
	Difference: 11200 (56%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.