Radeon HD 7790 vs Radeon R9 295X2

Intro

Compare all of that to the Radeon R9 295X2, which comes with 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 TAUs and 64 ROPs.

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 7790		4330 points
	Difference: 16875 (390%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon R9 295X2		500 Watts
	Difference: 415 Watts (488%)

Memory Bandwidth

In theory, the Radeon R9 295X2 is 567% quicker than the Radeon HD 7790 in general, due to its greater data rate. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 544000 (567%)

Texel Rate

The Radeon R9 295X2 is a lot (more or less 540%) better at texture filtering than the Radeon HD 7790. (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 302336 (540%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 295X2 is superior to the Radeon HD 7790, by a large margin. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 114304 (714%)

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 largest 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 card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour 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 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 reach the max fill rate.