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GeForce GTX 850M vs Radeon HD 6450 (OEM) 1GB

Intro

The GeForce GTX 850M has a core clock frequency of 876 MHz and a DDR3 memory frequency of 1000 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Compare those specifications to the Radeon HD 6450 (OEM) 1GB, which has clock speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 RAM. It features 160 SPUs along with 8 TAUs and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB 31 Watts
GeForce GTX 850M 40 Watts
Difference: 9 Watts (29%)

Memory Bandwidth

The GeForce GTX 850M, in theory, should perform a bit faster than the Radeon HD 6450 (OEM) 1GB overall. (explain)

GeForce GTX 850M 32000 MB/sec
Radeon HD 6450 (OEM) 1GB 28800 MB/sec
Difference: 3200 (11%)

Texel Rate

The GeForce GTX 850M will be a lot (about 484%) more effective at anisotropic filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

GeForce GTX 850M 35040 Mtexels/sec
Radeon HD 6450 (OEM) 1GB 6000 Mtexels/sec
Difference: 29040 (484%)

Pixel Rate

The GeForce GTX 850M will be a lot (more or less 367%) more effective at FSAA than the Radeon HD 6450 (OEM) 1GB, and also should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 850M 14016 Mpixels/sec
Radeon HD 6450 (OEM) 1GB 3000 Mpixels/sec
Difference: 11016 (367%)

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 850M

Amazon.com

Check prices at:

Radeon HD 6450 (OEM) 1GB

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.

Specifications

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Model GeForce GTX 850M Radeon HD 6450 (OEM) 1GB
Manufacturer nVidia AMD
Year March 12 2014 February 2011
Code Name GM107 Caicos
Memory 2048 MB 1024 MB
Core Speed 876 MHz 750 MHz
Memory Speed 2000 MHz 3600 MHz
Power (Max TDP) 40 watts 31 watts
Bandwidth 32000 MB/sec 28800 MB/sec
Texel Rate 35040 Mtexels/sec 6000 Mtexels/sec
Pixel Rate 14016 Mpixels/sec 3000 Mpixels/sec
Unified Shaders 640 160
Texture Mapping Units 40 8
Render Output Units 16 4
Bus Type DDR3 GDDR5
Bus Width 128-bit 64-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 370 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 12 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen 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 better this number, the better the 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 number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core 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 rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 850M

Amazon.com

Check prices at:

Radeon HD 6450 (OEM) 1GB

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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