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GeForce GTX 260 vs GeForce GTX 650

Intro

The GeForce GTX 260 comes with a GPU core speed of 576 MHz, and the 896 MB of GDDR3 memory runs at 999 MHz through a 448-bit bus. It also features 192 SPUs, 64 Texture Address Units, and 28 ROPs.

Compare that to the GeForce GTX 650, which comes with a core clock frequency of 1058 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is made up of 384 SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTX 260 182 Watts
Difference: 118 Watts (184%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 260 will be 40% faster than the GeForce GTX 650 in general, because of its higher data rate. (explain)

GeForce GTX 260 111888 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 31888 (40%)

Texel Rate

The GeForce GTX 260 is just a bit (more or less 9%) better at texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 260 36864 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 3008 (9%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 650 is the winner, but only just. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce GTX 260 16128 Mpixels/sec
Difference: 800 (5%)

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 260

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 GTX 260 GeForce GTX 650
Manufacturer nVidia nVidia
Year June 16, 2008 September 2012
Code Name G200 GK107
Memory 896 MB 2048 MB
Core Speed 576 MHz 1058 MHz
Memory Speed 1998 MHz 5000 MHz
Power (Max TDP) 182 watts 64 watts
Bandwidth 111888 MB/sec 80000 MB/sec
Texel Rate 36864 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 192 384
Texture Mapping Units 64 32
Render Output Units 28 16
Bus Type GDDR3 GDDR5
Bus Width 448-bit 128-bit
Fab Process 65 nm 28 nm
Transistors 1400 million 1300 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: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher 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 in a second.

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

Comments

4 Responses to “GeForce GTX 260 vs GeForce GTX 650”
randy says:

The GTX 260 is essentially the same as GTX 650, the advantage the GTX 650 has is Directx 11

SeriousJ says:

Looking at the gtx 650's power consumption, this has to be a very effective card for casual gaming deliviering 260's performance. (+directx 11.1)

PAul says:

lol 650 for lyfe!

Dark_Razar says:

Pros e cons of the two cards:

GTX 260:
- It is faster in general.
- A lot more Cheaper than the GTX 650 (You can save more than 60$).

GTX 650
- DirectX 11.
- Less Power Consuption.

It's not a real comparison, just because the GTX 260 is pretty old... But it's still a good graphic card.

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