Radeon R5 340X OEM vs HD 6450 GDDR5

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Primary details

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

Place in the ranking1118not rated
Place by popularitynot in top-100not in top-100
Power efficiency2.44no data
ArchitectureTerascale 2 (2009−2015)GCN 1.0 (2011−2020)
GPU code nameCaicosOland
Market segmentDesktopDesktop
Release date18 April 2011 (13 years ago)5 May 2015 (9 years ago)

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 cores160384
Core clock speed750 MHz900 MHz
Boost clock speedno data1050 MHz
Number of transistorsno data950 million
Manufacturing process technology40 nm28 nm
Power consumption (TDP)27 Watt65 Watt
Texture fill rateno data21.60
Floating-point processing powerno data0.6912 TFLOPS
ROPsno data8
TMUsno data24

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).

Interfaceno dataPCIe 3.0 x8
Lengthno data145 mm
Widthno data1-slot
Supplementary power connectorsno dataNone

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 typeGDDR5DDR3
Maximum RAM amount1 GB2 GB
Memory bus width64 Bit64 Bit
Memory clock speed900 MHz1000 MHz
Memory bandwidthno data16 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 Connectorsno data1x DVI, 1x DisplayPort

API compatibility

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

DirectX1112 (11_1)
Shader Modelno data5.1
OpenGLno data4.6
OpenCLno data1.2
Vulkan-1.2.131

Pros & cons summary


Recency 18 April 2011 5 May 2015
Maximum RAM amount 1 GB 2 GB
Chip lithography 40 nm 28 nm
Power consumption (TDP) 27 Watt 65 Watt

HD 6450 GDDR5 has 140.7% lower power consumption.

R5 340X OEM, on the other hand, has an age advantage of 4 years, a 100% higher maximum VRAM amount, and a 42.9% more advanced lithography process.

We couldn't decide between Radeon HD 6450 GDDR5 and Radeon R5 340X OEM. We've got no test results to judge.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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AMD Radeon HD 6450 GDDR5
Radeon HD 6450 GDDR5
AMD Radeon R5 340X OEM
Radeon R5 340X OEM

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Community ratings

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3.4 24 votes

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3.5 470 votes

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Questions & comments

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