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AMD Radeon E9171 MCM

Lexa
Graphics Processor
512
Cores
32
TMUs
16
ROPs
4096 MB
Memory Size
GDDR5
Memory Type
128 bit
Bus Width
AMD Radeon E9171 MCM Photo AMD Lexa Photo
The Radeon E9171 MCM is a graphics card by AMD, launched in October 2017. Built on the 14 nm process, and based on the Lexa graphics processor, in its E9170 variant, the card supports DirectX 12.0. The Lexa graphics processor is an average sized chip with a die area of 103 mm² and 2,200 million transistors. Unlike the fully unlocked Radeon 550X 640SP, which uses the same GPU but has all 640 shaders enabled, AMD has disabled some shading units on the Radeon E9171 MCM to reach the product's target shader count. It features 512 shading units, 32 texture mapping units and 16 ROPs. AMD has placed 4,096 MB GDDR5 memory on the card, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 1124 MHz, which can be boosted up to 1219 MHz, memory is running at 1500 MHz.
Being a igp card, the AMD Radeon E9171 MCM does not require any additional power connector, its power draw is rated at 40 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it. Radeon E9171 MCM is connected to the rest of the system using a PCI-Express 3.0 x8 interface.

Graphics Processor

GPU Name
Lexa
GPU Variant
E9170
Architecture
GCN 4.0
Process Size
14 nm
Transistors
2,200 million
Die Size
103 mm²

Graphics Card

Release Date
Oct 3rd, 2017
Generation
Embedded
(9000)
Production
Active
Bus Interface
PCIe 3.0 x8

Relative Performance

6%
8%
10%
13%
15%
16%
19%
25%
26%
28%
29%
30%
34%
37%
39%
41%
42%
44%
46%
49%
50%
52%
53%
61%
61%
63%
63%
63%
64%
65%
68%
72%
73%
76%
76%
77%
78%
78%
78%
80%
84%
85%
91%
93%
93%
97%
97%
100%
Radeon E9171 MCM
101%
108%
111%
111%
114%
114%
118%
120%
120%
122%
128%
131%
133%
133%
133%
134%
144%
146%
149%
151%
152%
153%
153%
156%
156%
161%
173%
177%
182%
183%
185%
187%
191%
196%
201%
205%
208%
208%
231%
254%
257%
275%
276%
280%
284%
286%
287%
292%
293%
294%
297%
313%
319%
323%
323%
356%
362%
368%
395%
434%
449%
484%
484%
511%
598%
613%
668%
760%
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
1124 MHz
Boost Clock
1219 MHz
Memory Clock
1500 MHz
6000 MHz effective

Memory

Memory Size
4096 MB
Memory Type
GDDR5
Memory Bus
128 bit
Bandwidth
96.00 GB/s

Render Config

Shading Units
512
TMUs
32
ROPs
16
Compute Units
8

Theoretical Performance

Pixel Rate
19.50 GPixel/s
Texture Rate
39.01 GTexel/s
FP16 (half) performance
1,248 GFLOPS (1:1)
FP32 (float) performance
1,248 GFLOPS
FP64 (double) performance
78.02 GFLOPS (1:16)

Board Design

Slot Width
IGP
TDP
40 W
Outputs
No outputs
Power Connectors
None

Graphics Features

DirectX
12.0 (12_0)
OpenGL
4.5
OpenCL
2.0
Vulkan
1.1.82
Shader Model
6.0

Lexa GPU Notes

Chip Variant: Polaris 12
Graphics/Compute: GFX8 (gfx804)
Display Core Engine: 11.2
Unified Video Decoder: 6.3
Video Compression Engine: 3.4