GeForce 8400 vs Radeon R9 390 X2

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Primary details

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

Place in the rankingnot ratednot rated
Place by popularitynot in top-100not in top-100
ArchitectureGCN 2.0 (2013−2017)Tesla (2006−2010)
GPU code nameGrenadaG98
Market segmentDesktopDesktop
Release date3 September 2015 (9 years ago)4 December 2007 (16 years ago)
Launch price (MSRP)$1,399 $69.78

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 cores25608
Core clock speed1000 MHz540 MHz
Number of transistors6,200 million210 million
Manufacturing process technology28 nm65 nm
Power consumption (TDP)580 Watt25 Watt
Texture fill rate160.04.320
Floating-point processing power5.12 TFLOPS0.0208 TFLOPS
ROPs644
TMUs1608

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).

InterfacePCIe 3.0 x16PCIe 2.0 x16
Width3-slot1-slot
Supplementary power connectors4x 8-pinNone

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 typeGDDR5DDR2
Maximum RAM amount8 GB256 MB
Memory bus width512 Bit64 Bit
Memory clock speed1350 MHz500 MHz
Memory bandwidth345.6 GB/s8 GB/s

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 Connectors2x DVI, 1x HDMI, 1x DisplayPort1x DVI, 1x VGA, 1x S-Video
HDMI+-

API compatibility

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

DirectX12 (12_0)11.1 (10_0)
Shader Model6.34.0
OpenGL4.63.3
OpenCL2.01.1
Vulkan1.2.131N/A
CUDA-1.1

Pros & cons summary


Recency 3 September 2015 4 December 2007
Maximum RAM amount 8 GB 256 MB
Chip lithography 28 nm 65 nm
Power consumption (TDP) 580 Watt 25 Watt

R9 390 X2 has an age advantage of 7 years, a 3100% higher maximum VRAM amount, and a 132.1% more advanced lithography process.

GeForce 8400, on the other hand, has 2220% lower power consumption.

We couldn't decide between Radeon R9 390 X2 and GeForce 8400. 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 R9 390 X2
Radeon R9 390 X2
NVIDIA GeForce 8400
GeForce 8400

Comparisons with similar GPUs

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Community ratings

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3 32 votes

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2.5 26 votes

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Questions & comments

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