GeForce 8800 GTS 640 vs GTX 850M

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking	569	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	10.01	no data
Architecture	Maxwell (2014−2017)	Tesla (2006−2010)
GPU code name	GM107	G80
Market segment	Laptop	Desktop
Release date	12 March 2014 (10 years ago)	8 November 2006 (18 years ago)
Launch price (MSRP)	no data	$449

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	640	96
Core clock speed	Up to 936 MHz	513 MHz
Number of transistors	1,870 million	681 million
Manufacturing process technology	28 nm	90 nm
Power consumption (TDP)	45 Watt	143 Watt
Texture fill rate	36.08	24.62
Floating-point processing power	1.155 TFLOPS	0.2281 TFLOPS
ROPs	16	20
TMUs	40	24

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Laptop size	medium sized	no data
Bus support	PCI Express 2.0, PCI Express 3.0	no data
Interface	PCIe 3.0 x16	PCIe 1.0 x16
Length	no data	267 mm
Width	no data	2-slot
Supplementary power connectors	no data	1x 6-pin
SLI options	+	-

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	DDR3	GDDR3
Maximum RAM amount	2 GB	640 MB
Standard memory configuration	DDR3 or GDDR5	no data
Memory bus width	128 Bit	320 Bit
Memory clock speed	Up to 2500 MHz	792 MHz
Memory bandwidth	80.0 GB/s	63.36 GB/s
Shared memory	-	-

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors	No outputs	2x DVI, 1x S-Video
eDP 1.2 signal support	Up to 3840x2160	no data
LVDS signal support	Up to 1920x1200	no data
VGA аnalog display support	Up to 2048x1536	no data
DisplayPort Multimode (DP++) support	Up to 3840x2160	no data
HDMI	+	-
HDCP content protection	+	-
7.1 channel HD audio on HDMI	+	-
TrueHD and DTS-HD audio bitstreaming	+	-

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

H.264, VC1, MPEG2 1080p video decoder	+	-
Optimus	+	-
Ansel	+	no data

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	12 (11_0)	11.1 (10_0)
Shader Model	5.1	4.0
OpenGL	4.5	3.3
OpenCL	1.1	1.1
Vulkan	1.1.126	N/A
CUDA	+	+

Pros & cons summary

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Recency	12 March 2014	8 November 2006
Maximum RAM amount	2 GB	640 MB
Chip lithography	28 nm	90 nm
Power consumption (TDP)	45 Watt	143 Watt

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