Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce 8800 GTS (G80) 640MB vs GeForce GT 420

Intro

The GeForce 8800 GTS (G80) 640MB makes use of a 90 nm design. nVidia has clocked the core frequency at 513 MHz. The GDDR3 RAM runs at a speed of 792 MHz on this card. It features 96 SPUs as well as 48 TAUs and 20 Rasterization Operator Units.

Compare all of that to the GeForce GT 420, which features a core clock speed of 700 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It features 48 SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420 50 Watts
GeForce 8800 GTS (G80) 640MB 143 Watts
Difference: 93 Watts (186%)

Memory Bandwidth

In theory, the GeForce 8800 GTS (G80) 640MB is 120% faster than the GeForce GT 420 in general, because of its greater bandwidth. (explain)

GeForce 8800 GTS (G80) 640MB 63360 MB/sec
GeForce GT 420 28800 MB/sec
Difference: 34560 (120%)

Texel Rate

The GeForce 8800 GTS (G80) 640MB will be much (more or less 340%) better at texture filtering than the GeForce GT 420. (explain)

GeForce 8800 GTS (G80) 640MB 24624 Mtexels/sec
GeForce GT 420 5600 Mtexels/sec
Difference: 19024 (340%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 8800 GTS (G80) 640MB is a better choice, by a large margin. (explain)

GeForce 8800 GTS (G80) 640MB 10260 Mpixels/sec
GeForce GT 420 2800 Mpixels/sec
Difference: 7460 (266%)

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

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

GeForce GT 420

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.

Specifications

Display Specifications

Hide Specifications

Model GeForce 8800 GTS (G80) 640MB GeForce GT 420
Manufacturer nVidia nVidia
Year Nov 2006 (640) September 2010
Code Name G80 GF108
Memory 640 MB 2048 MB
Core Speed 513 MHz 700 MHz
Memory Speed 1584 MHz 1800 MHz
Power (Max TDP) 143 watts 50 watts
Bandwidth 63360 MB/sec 28800 MB/sec
Texel Rate 24624 Mtexels/sec 5600 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 2800 Mpixels/sec
Unified Shaders 96 48
Texture Mapping Units 48 8
Render Output Units 20 4
Bus Type GDDR3 GDDR3
Bus Width 320-bit 128-bit
Fab Process 90 nm 40 nm
Transistors 681 million 585 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

GeForce GT 420

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

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti-Spam by WP-SpamShield