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GeForce GTX 460 1GB vs GeForce GTX 550 Ti

Intro

The GeForce GTX 460 1GB uses a 40 nm design. nVidia has set the core frequency at 675 MHz. The GDDR5 RAM is set to run at a frequency of 900 MHz on this model. It features 336 SPUs as well as 56 TAUs and 32 Rasterization Operator Units.

Compare those specifications to the GeForce GTX 550 Ti, which features a clock speed of 900 MHz and a GDDR5 memory speed of 1026 MHz. It also uses a 192-bit bus, and uses a 40 nm design. It is comprised of 192 SPUs, 32 TAUs, and 24 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 550 Ti 116 Watts
GeForce GTX 460 1GB 160 Watts
Difference: 44 Watts (38%)

Memory Bandwidth

The GeForce GTX 460 1GB, in theory, should be a small bit faster than the GeForce GTX 550 Ti overall. (explain)

GeForce GTX 460 1GB 115200 MB/sec
GeForce GTX 550 Ti 98496 MB/sec
Difference: 16704 (17%)

Texel Rate

The GeForce GTX 460 1GB should be a lot (more or less 31%) more effective at anisotropic filtering than the GeForce GTX 550 Ti. (explain)

GeForce GTX 460 1GB 37800 Mtexels/sec
GeForce GTX 550 Ti 28800 Mtexels/sec
Difference: 9000 (31%)

Pixel Rate

Both cards have the exact same pixel fill rate, so theoretically they should perform equally good at at anti-aliasing, and be able to handle the same screen resolutions. (explain)

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

GeForce GTX 460 1GB

Amazon.com

GeForce GTX 550 Ti

Amazon.com

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

Model GeForce GTX 460 1GB GeForce GTX 550 Ti
Manufacturer nVidia nVidia
Year July 2010 March 2011
Code Name GF104 GF116
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe 2.1 x16
Memory 1024 MB 1024 MB
Core Speed 675 MHz 900 MHz
Shader Speed 1350 MHz 1800 MHz
Memory Speed 900 MHz (3600 MHz effective) 1026 MHz (4104 MHz effective)
Unified Shaders 336 192
Texture Mapping Units 56 32
Render Output Units 32 24
Bus Type GDDR5 GDDR5
Bus Width 256-bit 192-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 160 watts 116 watts
Shader Model 5.0 5.0
Bandwidth 115200 MB/sec 98496 MB/sec
Texel Rate 37800 Mtexels/sec 28800 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 21600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Comments

6 Responses to “GeForce GTX 460 1GB vs GeForce GTX 550 Ti”
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