Radeon HD 7850 vs Radeon HD 7950 3GB

Intro

Compare those specifications to the Radeon HD 7950 3GB, which features a clock speed of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 384-bit bus, and uses a 28 nm design. It features 1792 SPUs, 112 TAUs, and 32 Raster Operation Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

Zcash Mining Hash Rate

Radeon HD 7950 3GB		229 Sol/s
Radeon HD 7850		171 Sol/s
	Difference: 58 (34%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 70 Watts (54%)

Memory Bandwidth

In theory, the Radeon HD 7950 3GB will be 56% quicker than the Radeon HD 7850 in general, because of its higher bandwidth. (explain)

Radeon HD 7950 3GB		240000 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 86400 (56%)

Texel Rate

The Radeon HD 7950 3GB will be much (about 63%) faster with regards to AF than the Radeon HD 7850. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 34560 (63%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 7850 is a better choice, not by a very large margin though. (explain)

Radeon HD 7850		27520 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 1920 (8%)

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 max amount of information (in units of MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's 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 texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.