I get commissions for purchases made through links on this page. (more info)

Compare any two graphics cards:
VS

GeForce 8400 GS 512MB vs GeForce GTS 450 1GB

Intro

The GeForce 8400 GS 512MB makes use of a 80 nm design. nVidia has set the core frequency at 650 MHz. The DDR2 memory runs at a speed of 400 MHz on this specific card. It features 16 SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Compare those specifications to the GeForce GTS 450 1GB, which comes with a core clock speed of 783 MHz and a GDDR5 memory frequency of 902 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is comprised of 192 SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8400 GS 512MB 40 Watts
GeForce GTS 450 1GB 106 Watts
Difference: 66 Watts (165%)

Memory Bandwidth

In theory, the GeForce GTS 450 1GB is 802% quicker than the GeForce 8400 GS 512MB overall, because of its higher data rate. (explain)

GeForce GTS 450 1GB 57728 MB/sec
GeForce 8400 GS 512MB 6400 MB/sec
Difference: 51328 (802%)

Texel Rate

The GeForce GTS 450 1GB is quite a bit (more or less 382%) more effective at anisotropic filtering than the GeForce 8400 GS 512MB. (explain)

GeForce GTS 450 1GB 25056 Mtexels/sec
GeForce 8400 GS 512MB 5200 Mtexels/sec
Difference: 19856 (382%)

Pixel Rate

The GeForce GTS 450 1GB will be a lot (more or less 382%) better at full screen anti-aliasing than the GeForce 8400 GS 512MB, and also capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTS 450 1GB 12528 Mpixels/sec
GeForce 8400 GS 512MB 2600 Mpixels/sec
Difference: 9928 (382%)

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 8400 GS 512MB

Amazon.com

Check prices at:

GeForce GTS 450 1GB

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 8400 GS 512MB GeForce GTS 450 1GB
Manufacturer nVidia nVidia
Year June 2007 September 2010
Code Name G86 GF106
Memory 512 MB 1024 MB
Core Speed 650 MHz 783 MHz
Memory Speed 800 MHz 3608 MHz
Power (Max TDP) 40 watts 106 watts
Bandwidth 6400 MB/sec 57728 MB/sec
Texel Rate 5200 Mtexels/sec 25056 Mtexels/sec
Pixel Rate 2600 Mpixels/sec 12528 Mpixels/sec
Unified Shaders 16 192
Texture Mapping Units 8 32
Render Output Units 4 16
Bus Type DDR2 GDDR5
Bus Width 64-bit 128-bit
Fab Process 80 nm 40 nm
Transistors 210 million 1170 million
Bus PCIe x16, PCI PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, 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 amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8400 GS 512MB

Amazon.com

Check prices at:

GeForce GTS 450 1GB

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