Radeon HD 6990M vs Radeon R9 380

When choosing between Radeon HD 6990M and Radeon R9 380, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Radeon HD 6990M and Radeon R9 380.

Radeon HD 6990M is a Laptop Graphics Card

Note: Radeon HD 6990M is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Radeon HD 6990M here:

Main Specs

  Radeon HD 6990M Radeon R9 380
Power consumption (TDP) 100 Watt 190 Watt
Interface MXM-B (3.0) PCIe 3.0 x16
Supplementary power connectors None 2 x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 380 has 90% more power consumption, than Radeon HD 6990M.
  • Radeon HD 6990M is connected by MXM-B (3.0), and Radeon R9 380 uses PCIe 3.0 x16 interface.
  • Radeon R9 380 has 2 GB more memory, than Radeon HD 6990M.
  • Radeon HD 6990M is used in Laptops, and Radeon R9 380 - in Desktops.
  • Radeon HD 6990M is build with Terascale 2 architecture, and Radeon R9 380 - with GCN.
  • Radeon HD 6990M is manufactured by 40 nm process technology, and Radeon R9 380 - by 28 nm process technology.
  • Memory clock speed of Radeon R9 380 is 70 MHz higher, than Radeon HD 6990M.

Game benchmarks

high / 1080p 14−16 35−40
ultra / 1080p 8−9 21−24
QHD / 1440p 3−4 16−18
4K / 2160p 10−11
low / 720p 30−33 60−65
medium / 1080p 16−18 40−45
The average gaming FPS of Radeon R9 380 in Assassin's Creed Odyssey is 140% more, than Radeon HD 6990M.

Full Specs

  Radeon HD 6990M Radeon R9 380
Architecture Terascale 2 GCN
Code name Blackcomb XTX Tonga Pro
Type Laptop Desktop
Release date 12 July 2011 26 June 2015
Pipelines 1120 1792
Core clock speed 715 MHz
Boost Clock 970 MHz
Transistor count 1,700 million 5,000 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 40.04 108.6
Floating-point performance 1,601.6 gflops 3,476 gflops
Length 221 mm
Memory bus width 256 Bit 256 Bit
Memory clock speed 900 MHz 970 MHz
Memory bandwidth 115.2 GB/s 182.4 GB/s
Shared memory - -
DirectX 11.2 (11_0)
Shader Model 5.0 6.3
OpenGL 4.4 4.5
OpenCL 1.2 2.0
Vulkan N/A +
Monero / XMR (CryptoNight) 0.48 kh/s
FreeSync +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 404 Mh/s
Laptop size large
Eyefinity +
HD3D +
PowerTune +
TrueAudio +
ZeroCore +
Mantle +
Design reference
Bridgeless CrossFire +
Number of Eyefinity displays 6
DisplayPort support +
CrossFire +
VCE +
DDMA audio +
Decred / DCR (Decred) 0.66 Gh/s
Ethereum / ETH (DaggerHashimoto) 18 Mh/s
Zcash / ZEC (Equihash) 168.45 Sol/s
Compute units 28
Form factor full height / full length / dual slot
High bandwidth memory (HBM) -
LiquidVR +
FRTC +
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