GeForce GTX 260 vs Radeon R9 M270X

Intro

Compare those specs to the Radeon R9 M270X, which features GPU clock speed of 725 MHz, and 2048 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTX 260 should in theory be quite a bit better than the Radeon R9 M270X overall. (explain)

GeForce GTX 260		111888 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 39888 (55%)

Texel Rate

The GeForce GTX 260 will be a lot (approximately 27%) faster with regards to AF than the Radeon R9 M270X. (explain)

GeForce GTX 260		36864 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 7864 (27%)

Pixel Rate

The GeForce GTX 260 should be a lot (more or less 39%) faster with regards to FSAA than the Radeon R9 M270X, and also able to handle higher resolutions better. (explain)

GeForce GTX 260		16128 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 4528 (39%)

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 maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the 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 better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.