GeForce GT 340 vs Radeon R7 250

Intro

Compare those specifications to the Radeon R7 250, which uses a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 memory is set to run at a frequency of 1150 MHz on this particular card. It features 384 SPUs as well as 24 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
GeForce GT 340		69 Watts
	Difference: 4 Watts (6%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 250 should be 35% quicker than the GeForce GT 340 in general, because of its greater data rate. (explain)

Radeon R7 250		73600 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 19200 (35%)

Texel Rate

The Radeon R7 250 will be a lot (approximately 36%) more effective at AF than the GeForce GT 340. (explain)

Radeon R7 250		24000 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 6400 (36%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R7 250 is a better choice, by a large margin. (explain)

Radeon R7 250		8000 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 3600 (82%)

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 largest amount of information (counted in megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock 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 processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.