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Nvidia GeForce GTX 645 OEM vs AMD Radeon R9 270X
Top Three Reasons for the
Nvidia GeForce GTX 645 OEM
Compared to AMD Radeon R9 270X
39
Noticeably lower TDP
Comment
65 W
vs
180 W
115 W lower TDP. The thermal design power (TDP) is the maximum amount of power the cooling system needs to dissipate. A lower TDP typically means that it consumes less power.
27
Shorter
Comment
111 mm
vs
120 mm
9 mm shorter
26
Distinctly narrower
Comment
145 mm
vs
274 mm
129 mm narrower
Nvidia GeForce GTX 645 OEM is better than AMD Radeon R9 270X because...
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Top 19 Reasons for the
AMD Radeon R9 270X
Compared to Nvidia GeForce GTX 645 OEM
185
Significantly faster GPU clock speed
Comment
1050 MHz
vs
823 MHz
227 MHz faster GPU clock speed. The graphics processing unit (GPU) has a higher clock speed.
95
Noticeably higher floating-point performance
Comment
2.56 TFLOPS
vs
0.9481 TFLOPS
1.61 TFLOPS higher floating-point performance. Floating-point performance is a measurement of the raw processing power of the GPU.
73
Newer version of DirectX
Comment
11.2
vs
11
Newer version of DirectX. DirectX is used in games, with newer versions supporting better graphics.
61
Substantially higher pixel rate
Comment
32 GPixel/s
vs
9.88 GPixel/s
22.12 GPixel/s higher pixel rate. The number of pixels that can be rendered to the screen every second.
48
Clearly higher effective memory clock speed
Comment
5600 MHz
vs
4000 MHz
1600 MHz higher effective memory clock speed. The effective memory clock speed is calculated from the size and data rate of the memory. Higher clock speeds can give increased performance in games and other applications.
47
Newer version of OpenCL
Comment
1.2
vs
1.1
Newer version of OpenCL. Some applications use OpenCL to utilise the power of the graphics processing unit (GPU) for non-graphical computing. Newer versions introduce more functionality and better performance.
38
Sizably faster memory clock speed
Comment
1400 MHz
vs
1000 MHz
400 MHz faster memory clock speed. The memory clock speed is one aspect that determines the memory bandwidth.
38
Significantly more shading units
Comment
1280
vs
576
704 more shading units. Shading units (or stream processors) are small processors within the graphics card that are responsible for processing different aspects of the image.
33
Distinctly more texture mapping units (TMUs)
Comment
80
vs
48
32 more texture mapping units (TMUs). TMUs take textures and map them to the geometry of a 3D scene. More TMUs will typically mean that texture information is processed faster.
33
Vastly more transistors
Comment
2800 million
vs
2540 million
260 million more transistors. A higher transistor count generally indicates a newer, more powerful processor.
32
Vastly more RAM memory
Comment
4.096 GB
vs
1.024 GB
3.07 GB more RAM memory
31
Substantially faster GPU turbo speed
Comment
1050 MHz
vs
888 MHz
162 MHz faster GPU turbo speed. When the GPU is running below its limitations, it can boost to a higher clock speed in order to give increased performance.
31
Measurably more memory bandwidth
Comment
179 GB/s
vs
64 GB/s
115 GB/s more memory bandwidth. This is the maximum rate that data can be read from or stored into memory.
31
Explicitly higher texture rate
Comment
80 GTexels/s
vs
39.5 GTexels/s
40.50 GTexels/s higher texture rate. The number of textured pixels that can be rendered to the screen every second.
30
Significantly wider memory bus width
Comment
256 bit
vs
128 bit
128 bit wider memory bus width. A wider bus width means that it can carry more data per cycle. It is an important factor of memory performance, and therefore the general performance of the graphics card.
29
Noticeably higher PassMark (G3D) result
Comment
4482
vs
1977
2505 higher PassMark (G3D) result. This benchmark measures the graphics performance of a video card. Source: PassMark.
29
Measurably more render output units (ROPs)
Comment
32
vs
16
16 more render output units (ROPs). The ROPs are responsible for some of the final steps of the rendering process, writing the final pixel data to memory and carrying out other tasks such as anti-aliasing to improve the look of graphics.
27
Explicitly higher PassMark (DirectCompute) result
Comment
2363
vs
943
1420 higher PassMark (DirectCompute) result. This benchmark measures the general purpose computational power of a graphics card. Source: PassMark.
25
Supports 4K resolution
Comment
Yes
vs
No
Allows you to view in ultra-high definition.