Radeon HD 7850 vs Radeon R9 295X2

Intro

Compare all that to the Radeon R9 295X2, which features clock speeds of 1018 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2816 SPUs along with 176 Texture Address Units and 64 Rasterization Operator 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.

3DMark Fire Strike Graphics Score

Radeon R9 295X2		21205 points
Radeon HD 7850		5200 points
	Difference: 16005 (308%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
Radeon R9 295X2		500 Watts
	Difference: 370 Watts (285%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 295X2 should be a lot faster than the Radeon HD 7850 overall. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 486400 (317%)

Texel Rate

The Radeon R9 295X2 is much (more or less 551%) more effective at AF than the Radeon HD 7850. (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 303296 (551%)

Pixel Rate

The Radeon R9 295X2 is much (approximately 373%) better at FSAA than the Radeon HD 7850, and also capable of handling higher screen resolutions better. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 102784 (373%)

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 transported over the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at 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 video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.