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GeForce GT 420 vs GeForce GTX 960

Intro

The GeForce GT 420 uses a 40 nm design. nVidia has set the core speed at 700 MHz. The GDDR3 RAM is set to run at a frequency of 900 MHz on this card. It features 48 SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Compare that to the GeForce GTX 960, which has core clock speeds of 1127 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs along with 64 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420 50 Watts
GeForce GTX 960 120 Watts
Difference: 70 Watts (140%)

Memory Bandwidth

In theory, the GeForce GTX 960 is 289% quicker than the GeForce GT 420 overall, due to its higher data rate. (explain)

GeForce GTX 960 112000 MB/sec
GeForce GT 420 28800 MB/sec
Difference: 83200 (289%)

Texel Rate

The GeForce GTX 960 is quite a bit (about 1188%) better at texture filtering than the GeForce GT 420. (explain)

GeForce GTX 960 72128 Mtexels/sec
GeForce GT 420 5600 Mtexels/sec
Difference: 66528 (1188%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 960 is superior to the GeForce GT 420, and very much so. (explain)

GeForce GTX 960 36064 Mpixels/sec
GeForce GT 420 2800 Mpixels/sec
Difference: 33264 (1188%)

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

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GeForce GT 420

Amazon.com

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GeForce GTX 960

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GT 420 GeForce GTX 960
Manufacturer nVidia nVidia
Year September 2010 January 2015
Code Name GF108 GM206
Memory 2048 MB 2048 MB
Core Speed 700 MHz 1127 MHz
Memory Speed 1800 MHz 7000 MHz
Power (Max TDP) 50 watts 120 watts
Bandwidth 28800 MB/sec 112000 MB/sec
Texel Rate 5600 Mtexels/sec 72128 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 36064 Mpixels/sec
Unified Shaders 48 1024
Texture Mapping Units 8 64
Render Output Units 4 32
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 585 million 2940 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GT 420

Amazon.com

Check prices at:

GeForce GTX 960

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Comments

One Response to “GeForce GT 420 vs GeForce GTX 960”
i says:

the first !!!!!!!!

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