GeForce GTX 650 vs Radeon R9 270

Intro

Compare those specs to the Radeon R9 270, which uses a 28 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 RAM runs at a speed of 1400 MHz on this specific card. It features 1280 SPUs as well as 80 TAUs and 32 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 270		5943 points
GeForce GTX 650		2263 points
	Difference: 3680 (163%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon R9 270		150 Watts
	Difference: 86 Watts (134%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 270 is 124% quicker than the GeForce GTX 650 in general, due to its greater data rate. (explain)

Radeon R9 270		179200 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 99200 (124%)

Texel Rate

The Radeon R9 270 should be much (about 113%) faster with regards to anisotropic filtering than the GeForce GTX 650. (explain)

Radeon R9 270		72000 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 38144 (113%)

Pixel Rate

The Radeon R9 270 should be a lot (more or less 70%) better at FSAA than the GeForce GTX 650, and also will be able to handle higher resolutions better. (explain)

Radeon R9 270		28800 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 11872 (70%)

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 information (in units of MB per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.