GeForce GT 420 vs Geforce GTX 760

Intro

Compare all of that to the Geforce GTX 760, which comes with GPU clock speed of 980 MHz, and 2048 MB of GDDR5 RAM running at 1502 MHz through a 256-bit bus. It also is comprised of 1152 SPUs, 96 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420		50 Watts
Geforce GTX 760		170 Watts
	Difference: 120 Watts (240%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 760 should be a lot faster than the GeForce GT 420 overall. (explain)

Geforce GTX 760		192256 MB/sec
GeForce GT 420		28800 MB/sec
	Difference: 163456 (568%)

Texel Rate

The Geforce GTX 760 should be a lot (about 1580%) faster with regards to anisotropic filtering than the GeForce GT 420. (explain)

Geforce GTX 760		94080 Mtexels/sec
GeForce GT 420		5600 Mtexels/sec
	Difference: 88480 (1580%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 760 is superior to the GeForce GT 420, by a large margin. (explain)

Geforce GTX 760		31360 Mpixels/sec
GeForce GT 420		2800 Mpixels/sec
	Difference: 28560 (1020%)

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 information (measured in MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.