Radeon HD 8770 OEM vs R5 340X OEM

General info

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

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Architecture	GCN 1.0 (2012−2020)	GCN 2.0 (2013−2017)
GPU code name	Oland	Bonaire
Market segment	Desktop	Desktop
Release date	5 May 2015 (8 years ago)	2 September 2013 (10 years ago)
Current price	no data	$44

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	384	896
Core clock speed	900 MHz	1050 MHz
Boost clock speed	1050 MHz	no data
Number of transistors	950 million	2,080 million
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	65 Watt	85 Watt
Texture fill rate	21.60	58.80
Floating-point performance	806.4 gflops	1,882 gflops

Size and 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).

Interface	PCIe 3.0 x8	PCIe 3.0 x16
Length	145 mm	183 mm
Width	1-slot	2-slot
Supplementary power connectors	None	1x 6-pin

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
Maximum RAM amount	2 GB	1 GB
Memory bus width	64 Bit	128 Bit
Memory clock speed	2000 MHz	6000 MHz
Memory bandwidth	16 GB/s	96 GB/s

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	1x DVI, 1x DisplayPort	1x DVI, 1x HDMI, 2x mini-DisplayPort
HDMI	no data	+

API support

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

DirectX	12 (11_1)	12 (12_0)
Shader Model	5.1	6.3
OpenGL	4.6	4.6
OpenCL	1.2	2.0
Vulkan	1.2.131	1.2.131

Advantages and disadvantages

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Recency	5 May 2015	2 September 2013
Maximum RAM amount	2 GB	1 GB
Power consumption (TDP)	65 Watt	85 Watt

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