NVIDIA GeForce GT 645 OEM vs AMD Radeon HD 7550M

Comparative analysis of NVIDIA GeForce GT 645 OEM and AMD Radeon HD 7550M videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory. Benchmark videocards performance analysis: PassMark - G2D Mark, PassMark - G3D Mark, GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps), Geekbench - OpenCL.

NVIDIA GeForce GT 645 OEM

AMD Radeon HD 7550M

Differences

Reasons to consider the NVIDIA GeForce GT 645 OEM

Videocard is newer: launch date 3 month(s) later
Around 72% higher core clock speed: 776 MHz vs 450 MHz
3.1x more texture fill rate: 37.2 GTexel / s vs 12 GTexel / s
Around 86% better floating-point performance: 894.0 gflops vs 480.0 gflops
2.1x more memory clock speed: 3828 MHz vs 1800 MHz
Around 10% better performance in PassMark - G2D Mark: 443 vs 403
4.3x better performance in PassMark - G3D Mark: 2006 vs 465

Specifications (specs)
Launch date	24 April 2012 vs 7 January 2012
Core clock speed	776 MHz vs 450 MHz
Texture fill rate	37.2 GTexel / s vs 12 GTexel / s
Floating-point performance	894.0 gflops vs 480.0 gflops
Memory clock speed	3828 MHz vs 1800 MHz
Benchmarks
PassMark - G2D Mark	443 vs 403
PassMark - G3D Mark	2006 vs 465

Reasons to consider the AMD Radeon HD 7550M

Around 39% higher pipelines: 400 vs 288
7.3x lower typical power consumption: 14 Watt vs 102 Watt
2x more maximum memory size: 2 GB vs 1 GB

Pipelines	400 vs 288
Thermal Design Power (TDP)	14 Watt vs 102 Watt
Maximum memory size	2 GB vs 1 GB

Compare benchmarks

GPU 1: NVIDIA GeForce GT 645 OEM
GPU 2: AMD Radeon HD 7550M

PassMark - G2D Mark

GPU 1

GPU 2

443

403

PassMark - G3D Mark

GPU 1

GPU 2

2006

465

Name	NVIDIA GeForce GT 645 OEM	AMD Radeon HD 7550M
PassMark - G2D Mark	443	403
PassMark - G3D Mark	2006	465
GFXBench 4.0 - T-Rex (Frames)	1914
GFXBench 4.0 - T-Rex (Fps)	1914
Geekbench - OpenCL		5371

Compare specifications (specs)

	NVIDIA GeForce GT 645 OEM	AMD Radeon HD 7550M
Essentials
Architecture	Fermi 2.0	TeraScale 2
Code name	GF114	Thames
Launch date	24 April 2012	7 January 2012
Place in performance rating	557	559
Type	Desktop	Laptop
Technical info
Core clock speed	776 MHz	450 MHz
Floating-point performance	894.0 gflops	480.0 gflops
Manufacturing process technology	40 nm	40 nm
Pipelines	288	400
Texture fill rate	37.2 GTexel / s	12 GTexel / s
Thermal Design Power (TDP)	102 Watt	14 Watt
Transistor count	1,950 million	716 million
Boost clock speed		550 MHz
Video outputs and ports
Display Connectors	2x DVI, 1x mini-HDMI	No outputs
Compatibility, dimensions and requirements
Interface	PCIe 2.0 x16	PCIe 2.0 x16
Length	210 mm
Laptop size		medium sized
API support
DirectX	12.0 (11_0)	11.2 (11_0)
OpenGL	4.6	4.4
Memory
Maximum RAM amount	1 GB	2 GB
Memory bandwidth	91.9 GB / s	28.8 GB / s
Memory bus width	192 Bit	64 Bit
Memory clock speed	3828 MHz	1800 MHz
Memory type	GDDR5	GDDR5 / DDR3
Shared memory		0