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GeForce GTX 285 1GB vs GeForce GTX 650 Ti 2GB

Intro

The GeForce GTX 285 1GB uses a 55 nm design. nVidia has set the core speed at 648 MHz. The GDDR3 RAM runs at a frequency of 1242 MHz on this model. It features 240 SPUs as well as 80 TAUs and 32 ROPs.

Compare those specifications to the GeForce GTX 650 Ti 2GB, which comes with a core clock frequency of 928 MHz and a GDDR5 memory frequency of 1350 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is made up of 768 SPUs, 64 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB 110 Watts
GeForce GTX 285 1GB 204 Watts
Difference: 94 Watts (85%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB will be 84% quicker than the GeForce GTX 650 Ti 2GB in general, because of its greater data rate. (explain)

GeForce GTX 285 1GB 158976 MB/sec
GeForce GTX 650 Ti 2GB 86400 MB/sec
Difference: 72576 (84%)

Texel Rate

The GeForce GTX 650 Ti 2GB is a little bit (more or less 15%) faster with regards to AF than the GeForce GTX 285 1GB. (explain)

GeForce GTX 650 Ti 2GB 59392 Mtexels/sec
GeForce GTX 285 1GB 51840 Mtexels/sec
Difference: 7552 (15%)

Pixel Rate

The GeForce GTX 285 1GB will be quite a bit (approximately 40%) better at FSAA than the GeForce GTX 650 Ti 2GB, and able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 285 1GB 20736 Mpixels/sec
GeForce GTX 650 Ti 2GB 14848 Mpixels/sec
Difference: 5888 (40%)

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 GTX 285 1GB

Amazon.com

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GeForce GTX 650 Ti 2GB

Amazon.com

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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 GTX 285 1GB GeForce GTX 650 Ti 2GB
Manufacturer nVidia nVidia
Year January 15, 2009 October 2012
Code Name G200b GK106
Memory 1024 MB 2048 MB
Core Speed 648 MHz 928 MHz
Memory Speed 2484 MHz 5400 MHz
Power (Max TDP) 204 watts 110 watts
Bandwidth 158976 MB/sec 86400 MB/sec
Texel Rate 51840 Mtexels/sec 59392 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 14848 Mpixels/sec
Unified Shaders 240 768
Texture Mapping Units 80 64
Render Output Units 32 16
Bus Type GDDR3 GDDR5
Bus Width 512-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 1400 million 2540 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core 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 applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 285 1GB

Amazon.com

Check prices at:

GeForce GTX 650 Ti 2GB

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.

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