GeForce GT 240 GDDR5 vs GeForce GTX 970M

Intro

Compare those specifications to the GeForce GTX 970M, which comes with core clock speeds of 924 MHz on the GPU, and 1000 MHz on the 3072 MB of GDDR5 RAM. It features 1280 SPUs along with 80 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
GeForce GTX 970M		75 Watts
	Difference: 5 Watts (7%)

Memory Bandwidth

In theory, the GeForce GTX 970M should perform a lot faster than the GeForce GT 240 GDDR5 in general. (explain)

GeForce GTX 970M		96000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 41600 (76%)

Texel Rate

The GeForce GTX 970M should be a lot (about 320%) faster with regards to texture filtering than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 970M		73920 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 56320 (320%)

Pixel Rate

The GeForce GTX 970M is a lot (approximately 908%) more effective at full screen anti-aliasing than the GeForce GT 240 GDDR5, and will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 970M		44352 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 39952 (908%)

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 transported across the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.