GeForce 6800 GT DDL vs Radeon R7 M340

Primary details

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

Place in performance ranking	888	not rated
Place by popularity	not in top-100	not in top-100
Architecture	GCN (2011−2017)	Curie (2003−2013)
GPU code name	Meso Pro DDR3	NV40
Market segment	Laptop	Desktop
Release date	16 June 2015 (8 years ago)	14 April 2004 (20 years ago)
Launch price (MSRP)	no data	$499

Detailed specifications

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	320	no data
Compute units	6	no data
Core clock speed	1021 MHz	350 MHz
Boost clock speed	1021 MHz	no data
Number of transistors	950 million	222 million
Manufacturing process technology	28 nm	130 nm
Power consumption (TDP)	no data	80 Watt
Texture fill rate	17.16	5.600
Floating-point performance	549.1 gflops	no data

Form factor & compatibility

Information on Radeon R7 M340 and GeForce 6800 GT DDL compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). 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.

Bus support	PCIe 3.0	no data
Interface	PCIe 3.0 x8	AGP Pro 8x
Length	no data	305 mm
Width	no data	2-slot
Supplementary power connectors	None	None

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	4 GB	256 MB
Memory bus width	128 Bit	256 Bit
Memory clock speed	1000 MHz	1000 MHz
Memory bandwidth	16 GB/s	32 GB/s
Shared memory	-	no data

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
Eyefinity	1	no data

Supported technologies

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

AppAcceleration	-	no data
Enduro	-	no data
FreeSync	1	no data
HD3D	+	no data
PowerTune	+	no data
DualGraphics	1	no data
TrueAudio	-	no data
ZeroCore	+	no data
Switchable graphics	1	no data

API compatibility

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

DirectX	DirectX® 12	9.0c (9_3)
Shader Model	5.1	3.0
OpenGL	4.4	2.1
OpenCL	Not Listed	N/A
Vulkan	+	N/A
Mantle	+	no data

Pros & cons summary

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Recency	16 June 2015	14 April 2004
Maximum RAM amount	4 GB	256 MB
Chip lithography	28 nm	130 nm

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