Radeon HD 7790 vs Radeon R7 M265

Intro

Compare all that to the Radeon R7 M265, which uses a 28 nm design. AMD has clocked the core frequency at 725 MHz. The DDR3 memory works at a speed of 1000 MHz on this particular card. It features 384 SPUs along with 24 TAUs and 8 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 HD 7790		4330 points
Radeon R7 M265		3256 points
	Difference: 1074 (33%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 7790 should in theory be quite a bit better than the Radeon R7 M265 in general. (explain)

Radeon HD 7790		96000 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 64000 (200%)

Texel Rate

The Radeon HD 7790 will be a lot (approximately 222%) faster with regards to AF than the Radeon R7 M265. (explain)

Radeon HD 7790		56000 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 38600 (222%)

Pixel Rate

The Radeon HD 7790 will be quite a bit (about 176%) more effective at AA than the Radeon R7 M265, and capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 7790		16000 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 10200 (176%)

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 data (in units of megabytes per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the 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 texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units of the card 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 most pixels that the graphics card could possibly record to its 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 filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.