GeForce 940M vs GeForce 9600 GSO 1.5GB

Intro

Compare those specifications to the GeForce 9600 GSO 1.5GB, which features a clock speed of 550 MHz and a GDDR3 memory speed of 800 MHz. It also makes use of a 192-bit memory bus, and uses a 65 nm design. It is comprised of 96 SPUs, 48 Texture Address Units, and 12 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce 9600 GSO 1.5GB should theoretically be a lot superior to the GeForce 940M in general. (explain)

GeForce 9600 GSO 1.5GB		38400 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 22400 (140%)

Texel Rate

The GeForce 9600 GSO 1.5GB will be a bit (approximately 3%) better at AF than the GeForce 940M. (explain)

GeForce 9600 GSO 1.5GB		26400 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 672 (3%)

Pixel Rate

The GeForce 940M will be quite a bit (more or less 30%) better at anti-aliasing than the GeForce 9600 GSO 1.5GB, and will be capable of handling higher resolutions more effectively. (explain)

GeForce 940M		8576 Mpixels/sec
GeForce 9600 GSO 1.5GB		6600 Mpixels/sec
	Difference: 1976 (30%)

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 (measured in MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better 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 chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel 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 get to the max fill rate.