NVIDIA GeForce GT 645 OEM vs ATI Mobility Radeon HD 4870

Comparative analysis of NVIDIA GeForce GT 645 OEM and ATI Mobility Radeon HD 4870 videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: PassMark - G2D Mark, PassMark - G3D Mark, GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps).

NVIDIA GeForce GT 645 OEM

ATI Mobility Radeon HD 4870

Differences

Reasons to consider the NVIDIA GeForce GT 645 OEM

Videocard is newer: launch date 3 year(s) 3 month(s) later
Around 41% higher core clock speed: 776 MHz vs 550 MHz
Around 69% higher texture fill rate: 37.2 GTexel / s vs 22 GTexel / s
Around 2% better floating-point performance: 894.0 gflops vs 880.0 gflops
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 40 nm vs 55 nm
2x more maximum memory size: 1 GB vs 512 MB
2.2x more memory clock speed: 3828 MHz vs 1776 MHz
Around 6% better performance in PassMark - G2D Mark: 443 vs 416
2.8x better performance in PassMark - G3D Mark: 2006 vs 720

Specifications (specs)
Launch date	24 April 2012 vs 9 January 2009
Core clock speed	776 MHz vs 550 MHz
Texture fill rate	37.2 GTexel / s vs 22 GTexel / s
Floating-point performance	894.0 gflops vs 880.0 gflops
Manufacturing process technology	40 nm vs 55 nm
Maximum memory size	1 GB vs 512 MB
Memory clock speed	3828 MHz vs 1776 MHz
Benchmarks
PassMark - G2D Mark	443 vs 416
PassMark - G3D Mark	2006 vs 720

Reasons to consider the ATI Mobility Radeon HD 4870

2.8x more pipelines: 800 vs 288
Around 75% better performance in GFXBench 4.0 - T-Rex (Frames): 3350 vs 1914
Around 75% better performance in GFXBench 4.0 - T-Rex (Fps): 3350 vs 1914

Specifications (specs)
Pipelines	800 vs 288
Benchmarks
GFXBench 4.0 - T-Rex (Frames)	3350 vs 1914
GFXBench 4.0 - T-Rex (Fps)	3350 vs 1914

Compare benchmarks

GPU 1: NVIDIA GeForce GT 645 OEM
GPU 2: ATI Mobility Radeon HD 4870

PassMark - G2D Mark

GPU 1

GPU 2

443

416

PassMark - G3D Mark

GPU 1

GPU 2

2006

720

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

1914

3350

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

1914

3350

Name	NVIDIA GeForce GT 645 OEM	ATI Mobility Radeon HD 4870
PassMark - G2D Mark	443	416
PassMark - G3D Mark	2006	720
GFXBench 4.0 - T-Rex (Frames)	1914	3350
GFXBench 4.0 - T-Rex (Fps)	1914	3350

Compare specifications (specs)

	NVIDIA GeForce GT 645 OEM	ATI Mobility Radeon HD 4870
Essentials
Architecture	Fermi 2.0	TeraScale
Code name	GF114	M98
Launch date	24 April 2012	9 January 2009
Place in performance rating	557	591
Type	Desktop	Laptop
Technical info
Core clock speed	776 MHz	550 MHz
Floating-point performance	894.0 gflops	880.0 gflops
Manufacturing process technology	40 nm	55 nm
Pipelines	288	800
Texture fill rate	37.2 GTexel / s	22 GTexel / s
Thermal Design Power (TDP)	102 Watt
Transistor count	1,950 million	956 million
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		large
API support
DirectX	12.0 (11_0)	10.1
OpenGL	4.6	3.3
Memory
Maximum RAM amount	1 GB	512 MB
Memory bandwidth	91.9 GB / s	56.8 GB / s
Memory bus width	192 Bit	256 Bit
Memory clock speed	3828 MHz	1776 MHz
Memory type	GDDR5	GDDR5
Shared memory		0
Technologies
1x Dual-Link/Single-Link DVI
1x Single-Link DVI Support (all display ports have to be supported by the laptop manufacturer)
DisplayPort support up to 2560x1600
HDMI support up to 1920x1080 (both with 7.1 AC3 Audio)
PCI-E 2.0 x16
Powerplay