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GeForce GTS 250 1GB vs GeForce GTX 550 Ti


Intro

The GeForce GTS 250 1GB has a GPU core speed of 738 MHz, and the 1024 MB of GDDR3 memory is set to run at 1100 MHz through a 256-bit bus. It also features 128 Stream Processors, 64 Texture Address Units, and 16 ROPs.

Compare those specifications to the GeForce GTX 550 Ti, which comes with GPU clock speed of 900 MHz, and 1024 MB of GDDR5 RAM set to run at 1026 MHz through a 192-bit bus. It also features 192 SPUs, 32 TAUs, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 550 Ti 116 Watts
GeForce GTS 250 1GB 145 Watts
Difference: 29 Watts (25%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 550 Ti should theoretically be quite a bit superior to the GeForce GTS 250 1GB in general. (explain)

GeForce GTX 550 Ti 98496 MB/sec
GeForce GTS 250 1GB 70400 MB/sec
Difference: 28096 (40%)

Texel Rate

The GeForce GTS 250 1GB will be quite a bit (about 64%) more effective at texture filtering than the GeForce GTX 550 Ti. (explain)

GeForce GTS 250 1GB 47232 Mtexels/sec
GeForce GTX 550 Ti 28800 Mtexels/sec
Difference: 18432 (64%)

Pixel Rate

The GeForce GTX 550 Ti should be quite a bit (about 83%) faster with regards to full screen anti-aliasing than the GeForce GTS 250 1GB, and also will be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 550 Ti 21600 Mpixels/sec
GeForce GTS 250 1GB 11808 Mpixels/sec
Difference: 9792 (83%)

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 GTS 250 1GB

GeForce GTX 550 Ti

Specifications

Display Specifications

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Model GeForce GTS 250 1GB GeForce GTX 550 Ti
Manufacturer nVidia nVidia
Year March 3, 2009 March 2011
Code Name G92a/b GF116
Memory 1024 MB 1024 MB
Core Speed 738 MHz 900 MHz
Memory Speed 2200 MHz 4104 MHz
Power (Max TDP) 145 watts 116 watts
Bandwidth 70400 MB/sec 98496 MB/sec
Texel Rate 47232 Mtexels/sec 28800 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 21600 Mpixels/sec
Unified Shaders 128 192
Texture Mapping Units 64 32
Render Output Units 16 24
Bus Type GDDR3 GDDR5
Bus Width 256-bit 192-bit
Fab Process 65/55 nm 40 nm
Transistors 754 million 1170 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

GeForce GTS 250 1GB

GeForce GTX 550 Ti

Comments

One Response to “GeForce GTS 250 1GB vs GeForce GTX 550 Ti”
12060pts en 3DMark06 GTX 550Ti says:

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