AMD
GPUIntegrated (APU)Released Nov 16, 2023

AMD Steam Deck OLED GPU

128-bit · 512 cores

Sephiroth is the 6 nm refresh of the Steam Deck APU that Valve shipped in the Steam Deck OLED, announced on 9 November 2023 and released a week later. The graphics block is unchanged at eight RDNA 2 compute units running at up to 1.6 GHz, so the handheld renders at the same speed as the original; the gains come from the smaller process and faster 6400 MT/s memory, which improve efficiency and battery life.

General

Manufacturer
AMD
Model
Steam Deck OLED GPU
Segment
Integrated (APU)
GPU chip
Sephiroth
Architecture
RDNA 2
Release date
Nov 16, 2023
Price
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Memory

Memory size
16 GB
Memory type
LPDDR5
Bus width
128-bit
Bandwidth
102.4 GB/s
Memory clock
3,200 MHz

Clocks & silicon

GPU clock
1,000 MHz
Boost clock
1,600 MHz
Shader units
512 Stream Processors (8 CU)
Tensor / AI cores
—
RT cores
8
Transistors
—
Technology (nm)
6 nm
TSMC N6
TDP / TBP
—

Interface & APIs

Bus interface
Integrated (on-die)
SLI / multi-GPU
—
DirectX
12 Ultimate (12_2)
OpenGL
4.6
Vulkan
1.3
Other APIs
—

AI support

Precisions
FP8FP16BF16INT8INT4TF32FP64
AI accelerator
None (RDNA 2 packed math / DP4a integer dot product)
Peak AI TOPS
—
Notes
RDNA 2 has no dedicated matrix or AI accelerator. Packed FP16 runs at twice the FP32 rate and INT8 and INT4 dot-product instructions are available, but there is no BF16, TF32 or FP8 support.

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