GeForce GT 310 vs Radeon R7 250

Intro

Compare all that to the Radeon R7 250, which features a clock speed of 1000 MHz and a GDDR5 memory speed of 1150 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is comprised of 384 SPUs, 24 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 310		31 Watts
Radeon R7 250		65 Watts
	Difference: 34 Watts (110%)

Memory Bandwidth

In theory, the Radeon R7 250 should perform a lot faster than the GeForce GT 310 overall. (explain)

Radeon R7 250		73600 MB/sec
GeForce GT 310		16000 MB/sec
	Difference: 57600 (360%)

Texel Rate

The Radeon R7 250 should be a lot (more or less 409%) more effective at texture filtering than the GeForce GT 310. (explain)

Radeon R7 250		24000 Mtexels/sec
GeForce GT 310		4712 Mtexels/sec
	Difference: 19288 (409%)

Pixel Rate

The Radeon R7 250 will be a lot (approximately 240%) faster with regards to FSAA than the GeForce GT 310, and will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R7 250		8000 Mpixels/sec
GeForce GT 310		2356 Mpixels/sec
	Difference: 5644 (240%)

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 (in units of megabytes per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics 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 maximum number of pixels that the graphics card can possibly record to the 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 clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.