Radeon HD 6870M vs GeForce GTX 850M

General info

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

Place in performance ranking	536	not rated
Place by popularity	not in top-100	not in top-100
Value for money	3.75	no data
Architecture	Maxwell (2014−2018)	Terascale 2 (2009−2015)
GPU code name	N15P-GT	Granville-PRO
Market segment	Laptop	Laptop
Release date	12 March 2014 (10 years ago)	7 January 2011 (13 years ago)
Current price	$163	$338

Value for money

Performance to price ratio. The higher, the better.

Technical specs

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	640	800
CUDA cores	640	no data
Core clock speed	Up to 936 MHz	675 MHz
Number of transistors	1,870 million	1,040 million
Manufacturing process technology	28 nm	40 nm
Power consumption (TDP)	45 Watt	50 Watt
Texture fill rate	36.08	27.00
Floating-point performance	1,155 gflops	1,080.0 gflops

Size and compatibility

Information on GeForce GTX 850M and Radeon HD 6870M compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.

Laptop size	medium sized	large
Bus support	PCI Express 2.0, PCI Express 3.0	no data
Interface	PCIe 3.0 x16	MXM-B (3.0)
SLI options	+	no data

Memory

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, GDDR5	DDR3, GDDR3, GDDR5
Maximum RAM amount	4 GB	1 GB
Standard memory configuration	DDR3 or GDDR5	no data
Memory bus width	128 Bit	128 Bit
Memory clock speed	Up to 2500 MHz	1000 MHz
Memory bandwidth	80.0 GB/s	64 GB/s
Shared memory	-	-

Video outputs and ports

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	No outputs
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	+	no data
HDCP content protection	+	no data
7.1 channel HD audio on HDMI	+	no data
TrueHD and DTS-HD audio bitstreaming	+	no data

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	+	no data
Optimus	+	no data
Ansel	+	no data

API support

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

DirectX	12 (11_0)	11.2 (11_0)
Shader Model	5.1	5.0
OpenGL	4.5	4.4
OpenCL	1.1	1.2
Vulkan	1.1.126	N/A
CUDA	+	no data

Advantages and disadvantages

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Recency	12 March 2014	7 January 2011
Maximum RAM amount	4 GB	1 GB
Chip lithography	28 nm	40 nm
Power consumption (TDP)	45 Watt	50 Watt

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