GeForce GTS 150 vs Radeon R9 270X

Intro

Compare those specifications to the Radeon R9 270X, which features a clock speed of 1000 MHz and a GDDR5 memory frequency of 1400 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1280 SPUs, 80 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 150		141 Watts
Radeon R9 270X		180 Watts
	Difference: 39 Watts (28%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 270X should perform quite a bit faster than the GeForce GTS 150 in general. (explain)

Radeon R9 270X		179200 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 147200 (460%)

Texel Rate

The Radeon R9 270X is a lot (about 69%) more effective at anisotropic filtering than the GeForce GTS 150. (explain)

Radeon R9 270X		80000 Mtexels/sec
GeForce GTS 150		47360 Mtexels/sec
	Difference: 32640 (69%)

Pixel Rate

The Radeon R9 270X is a lot (about 170%) more effective at anti-aliasing than the GeForce GTS 150, and also able to handle higher resolutions better. (explain)

Radeon R9 270X		32000 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 20160 (170%)

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: Bandwidth is the largest amount of data (measured in MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock 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 fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.