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GeForce 9800 GTX+ vs GeForce GTX 650

Intro

The GeForce 9800 GTX+ features a GPU core clock speed of 738 MHz, and the 512 MB of GDDR3 memory runs at 1100 MHz through a 256-bit bus. It also is comprised of 128 SPUs, 64 Texture Address Units, and 16 ROPs.

Compare those specs to the GeForce GTX 650, which features clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce 9800 GTX+ 145 Watts
Difference: 81 Watts (127%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 650 should in theory be just a bit better than the GeForce 9800 GTX+ in general. (explain)

GeForce GTX 650 80000 MB/sec
GeForce 9800 GTX+ 70400 MB/sec
Difference: 9600 (14%)

Texel Rate

The GeForce 9800 GTX+ is much (approximately 40%) more effective at texture filtering than the GeForce GTX 650. (explain)

GeForce 9800 GTX+ 47232 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 13376 (40%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 650 is a better choice, and very much so. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce 9800 GTX+ 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 9800 GTX+

Amazon.com

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GeForce GTX 650

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 9800 GTX+ GeForce GTX 650
Manufacturer nVidia nVidia
Year July 2008 September 2012
Code Name G92b GK107
Memory 512 MB 1024 MB
Core Speed 738 MHz 1058 MHz
Memory Speed 2200 MHz 5000 MHz
Power (Max TDP) 145 watts 64 watts
Bandwidth 70400 MB/sec 80000 MB/sec
Texel Rate 47232 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 128 384
Texture Mapping Units 64 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 754 million 1300 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be 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 this number, the better the video 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 most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce 9800 GTX+

Amazon.com

Check prices at:

GeForce GTX 650

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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