AMD Steam Machine GPU vs AMD Radeon HD 8770 OEM
GPU · Specs Compare
Graphics Card
Release Date
Jan 2026
Sep 2013
Generation
Console GPU
Sea Islands
Type
Desktop
Desktop
Bus Interface
—
PCIe 3.0 x16
Clock Speeds
Base Clock
1720 MHz
—
Boost Clock
2450 MHz
—
Memory Clock
2250 MHz
1500 MHz
Memory
Memory Size
8GB
1024MB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
128bit
Bandwidth
288.0GB/s
96.00GB/s
Render Config
Compute Units
28
14
Shading Units
1792
896
TMUs
112
56
ROPs
64
16
RT Cores
28
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
256 KB
L3 Cache
32 MB
—
Theoretical Performance
Pixel Rate
156.8 GPixel/s
16.80 GPixel/s
Texture Rate
274.4 GTexel/s
58.80 GTexel/s
FP16 (half)
35.12 TFLOPS
—
FP32 (float)
17.56 TFLOPS
1.882 TFLOPS
FP64 (double)
548.8 GFLOPS
117.6 GFLOPS
Graphics Processor
GPU Name
Navi 33
Bonaire
Architecture
RDNA 3.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
6 nm
28 nm
Transistors
13.3 billion
2.08 billion
Die Size
204 mm²
160 mm²
GPU Variant
—
Bonaire XT(215-0839039)
Board Design
TDP
110W
85W
Outputs
No outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
None
1x 6-pin
Suggested PSU
—
250 W
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.2
2.0
Vulkan
1.4
1.2
Shader Model
6.8
6.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.