GeForce GT 1030 vs GeForce GTS 450 1GB

Intro

Compare those specs to the GeForce GTS 450 1GB, which has core clock speeds of 783 MHz on the GPU, and 902 MHz on the 1024 MB of GDDR5 memory. It features 192 SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 1030		30 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 76 Watts (253%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 450 1GB should be 17% quicker than the GeForce GT 1030 overall, due to its greater data rate. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce GT 1030		49152 MB/sec
	Difference: 8576 (17%)

Texel Rate

The GeForce GT 1030 is quite a bit (more or less 62%) more effective at AF than the GeForce GTS 450 1GB. (explain)

GeForce GT 1030		40480 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 15424 (62%)

Pixel Rate

The GeForce GT 1030 will be a lot (more or less 62%) better at AA than the GeForce GTS 450 1GB, and also able to handle higher screen resolutions more effectively. (explain)

GeForce GT 1030		20240 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 7712 (62%)

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 data (measured in MB per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's 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 number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to 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 bandwidth is, the lower the potential to reach the max fill rate.