Imagination PowerVR SGX543 vs Nvidia GeForce GT 745M

Imagination PowerVR SGX543 on Amazon USA
Nvidia GeForce GT 745M on Amazon USA

Compare the technical characteristics between the group of graphics cards Imagination PowerVR SGX543 and the video card Nvidia GeForce GT 745M. We also have a comparison of the respective performances with the benchmarks, the power in terms of GFLOPS FP16, GFLOPS FP32, GFLOPS FP64 if available, the filling rate in GPixels/s, the filtering rate in GTexels/s.

Specification comparison:

Nvidia GeForce GT 745M2013 Q1 28 nm 549 549 256 2000 45 384 32 16 2 4.392 17.57 421.6 17.57
Imagination PowerVR SGX543 MP4+2011 Q4 32 nm 41 222 0 128 4 2 4 8 4 35 0.8 1.6 28.41
Imagination PowerVR SGX543 MP42009 Q1 32 nm 200 250 0 0 4 16 8.75 0.8 25.6
Imagination PowerVR SGX543 MP32009 Q1 32 nm 200 266 0 0 3 12 6.56 0.6 19.2
Imagination PowerVR SGX543 MP22009 Q1 32 nm 200 0 0 2 8 4.375 0.4 12.8

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TMUs: texture mapping units. This unit was a physical processor separated from the main graphics processing units. It is able to distort a bitmap image, and also to resize it, to rotate it and to place it as a texture onto a plane of a specific 3D model.

ROPs: render output units. The other name of this unit is raster operations pipeline. This hadware component is taking pixel and texel information, and processing it through vector and matrix operations. The result will be a depth value or a final pixel. It is able to control antialiasing with the merge of several sample into one pixel.

SM / SMX, CUs (compute units) : streaming multiprocessor. These processors are implied in the Kepler's power efficiency when the GPU is using one unified clock speed.

The term pixel fillrate is refering to the number of pixels that the video card is able to generate every second. This performance is achieved by multiplying the raster output units (ROPs) by the clock frequency of the graphics processor unit (GPU). Matrix and vector operations allow pixel pipelines to process pixels and texels stored in the buffer. The ROPs will then generate transactions between the buffer and local memory. You should know that the higher the pixel rate, the greater the screen resolution that the GPU can manage.

The term texture fillrate refers to the number of map texture elements (texels) that the GPU is capable of generating per second. This performance is achieved by multiplying the texture mapping units (TMUs) by the clock frequency of the graphics processor unit. To make a 3D scene in a video game or in 3D editing software such as Blender, the graphics card must perform what is called texture mapping with the texture mapping units.

Performance comparison with the benchmarks:

FP32 Performance in GFLOPS
Nvidia GeForce GT 745M 421.6
Imagination PowerVR SGX543 MP4+ 28.41
Imagination PowerVR SGX543 MP4 25.6
Imagination PowerVR SGX543 MP3 19.2
Imagination PowerVR SGX543 MP2 12.8

Single-precision floating-point format, also called FP32, is a computer number format that typically occupies 32 bits in PC memory. This represents a wide dynamic range of numeric values that employs a floating point. FP32 power helps assess the video card's capabilities for generating rendering workloads. Video games use INT32 and FP32 cores to manage calculations with integers and numbers with decimals in order to produce maps, bone matrices on which the vertex shaders will calculate the vertices. Values in single precision format are mainly used in video games and 3D software.

See also:

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