GeForce GTX 1630 vs GeForce GTX 950

Intro

Compare those specifications to the GeForce GTX 950, which comes with a clock frequency of 1024 MHz and a GDDR5 memory frequency of 1652 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It is comprised of 768 SPUs, 48 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1630		75 Watts
GeForce GTX 950		90 Watts
	Difference: 15 Watts (20%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 950 should in theory be a little bit better than the GeForce GTX 1630 overall. (explain)

GeForce GTX 950		105728 MB/sec
GeForce GTX 1630		98304 MB/sec
	Difference: 7424 (8%)

Texel Rate

The GeForce GTX 1630 is a small bit (about 13%) better at anisotropic filtering than the GeForce GTX 950. (explain)

GeForce GTX 1630		55680 Mtexels/sec
GeForce GTX 950		49152 Mtexels/sec
	Difference: 6528 (13%)

Pixel Rate

The GeForce GTX 950 will be a little bit (approximately 18%) more effective at AA than the GeForce GTX 1630, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce GTX 1630		27840 Mpixels/sec
	Difference: 4928 (18%)

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 max amount of data (in units of MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This 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 video 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 most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.