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GeForce GTS 250 1GB vs GeForce GTX 650

Intro

The GeForce GTS 250 1GB makes use of a 65/55 nm design. nVidia has clocked the core frequency at 738 MHz. The GDDR3 RAM works at a frequency of 1100 MHz on this model. It features 128 SPUs as well as 64 TAUs and 16 Rasterization Operator Units.

Compare all of that to the GeForce GTX 650, which uses a 28 nm design. nVidia has set the core frequency at 1058 MHz. The GDDR5 memory is set to run at a speed of 1250 MHz on this card. It features 384 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTS 250 1GB 145 Watts
Difference: 81 Watts (127%)

Memory Bandwidth

Performance-wise, the GeForce GTX 650 should theoretically be a little bit superior to the GeForce GTS 250 1GB in general. (explain)

GeForce GTX 650 80000 MB/sec
GeForce GTS 250 1GB 70400 MB/sec
Difference: 9600 (14%)

Texel Rate

The GeForce GTS 250 1GB will be a lot (about 40%) better at anisotropic filtering than the GeForce GTX 650. (explain)

GeForce GTS 250 1GB 47232 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 13376 (40%)

Pixel Rate

The GeForce GTX 650 is quite a bit (more or less 43%) more effective at anti-aliasing than the GeForce GTS 250 1GB, and able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce GTS 250 1GB 11808 Mpixels/sec
Difference: 5120 (43%)

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 GTS 250 1GB

Amazon.com

GeForce GTX 650

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

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Model GeForce GTS 250 1GB GeForce GTX 650
Manufacturer nVidia nVidia
Year March 3, 2009 September 2012
Code Name G92a/b GK107
Fab Process 65/55 nm 28 nm
Bus PCIe x16 2.0 PCIe 3.0 x16
Memory 1024 MB 2048 MB
Core Speed 738 MHz 1058 MHz
Shader Speed 1836 MHz 1058 MHz
Memory Speed 2200 MHz 5000 MHz
Unified Shaders 128 384
Texture Mapping Units 64 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.1 OpenGL 4.3
Power (Max TDP) 145 watts 64 watts
Shader Model 4.0 5.0
Bandwidth 70400 MB/sec 80000 MB/sec
Texel Rate 47232 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 16928 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the 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 are processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of 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 rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Comments

One Response to “GeForce GTS 250 1GB vs GeForce GTX 650”
kneegrow says:

lol@blank prices

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