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AMD Xbox One GPU

AMD Xbox One GPU Image AMD Durango Image
The Xbox One GPU is a high-end graphics card by AMD, launched in November 2013. Built on the 28 nm process, and based on the Durango graphics processor, the card supports DirectX 11.2. The Durango graphics processor is a large chip with a die area of 363 mm² and 5,000 million transistors. It features 768 shading units, 48 texture mapping units and 16 ROPs. AMD has placed 8,192 MB DDR3 memory on the card, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 853 MHz, memory is running at 1066 MHz.
We recommend the AMD Xbox One GPU for gaming with highest details at resolutions up to, and including, 1280x720.
Being a igp card, its power draw is rated at 95 W maximum. Its price at launch was 499 US Dollars.

Graphics Processor

GPU Name: Durango
Process Size: 28 nm
Transistors: 5,000 million
Die Size: 363 mm²

Graphics Card

Released: Nov 22nd, 2013
Production Status: Active
Launch Price: 499 USD
Bus Interface: IGP

Clock Speeds

GPU Clock: 853 MHz
Memory Clock: 1066 MHz
2132 MHz effective

Memory

Memory Size: 8192 MB
Memory Type: DDR3
Memory Bus: 256 bit
Bandwidth: 68.2 GB/s

Render Config

Shading Units: 768
TMUs: 48
ROPs: 16
Compute Units: 12
Pixel Rate: 13.6 GPixel/s
Texture Rate: 40.9 GTexel/s
Floating-point performance: 1,310 GFLOPS

Board Design

Slot Width: IGP
TDP: 95 W

Graphics Features

DirectX: 11.2
OpenGL: None
OpenCL: 1.2
Shader Model: 5.0

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Durango GPU Notes

Instruction issue rate:
12 SCs * 4 SIMDs * 16 threads/clock = 768 ops/clock

FLOPs:
768 ops/clock * (1 mul + 1 add) * 800 MHz = 1.2 TFLOPS

Interpolation:
(768 ops/clock / 2 ops) * 800 MHz = 307.2 Gfloat/sec

Triangle rate:
2 tri/clock * 800 MHz = 1.6 Gtri/sec

Vertex rate:
2 vert/clock * 800 MHz = 1.6 Gvert/sec

Vertex/buffer fetch rate: (4 bytes)
4 elements/clock * 12 SCs * 800 MHz = 38.4 Gelement/sec

Vertex/Buffer data rate from cache:
38.4 Gelements/sec * 4 bytes = 153.6 GB/sec

Peak throughput from main RAM:
68.2 GB/sec

Peak throughput from ESRAM:
128 bytes/clock * 800 MHz = 102.4 GB/sec

ESRAM size:
32 MB

GSM size:
64 KB

LSM size:
12 SCs * 64 KB = 768 KB

L2 cache size:
4 x 128 KB = 512 KB (shared)

Bilinear fetch rate: (4 bytes)
4 fetches/clock * 12 SCs * 800 MHz = 38.4 Gtexels/sec

Bilinear data rate from cache:
38.4 Gtexels/sec * 4 bytes = 153.6 GB/sec

L1 cache size:
16 KB/SC * 12 SCs = 192 KB (nonshared)

Pixel clear rate:
1 8×8 tile/clock * 4 DBs * 800 MHz = 204.8 Gpixel/sec

Pixel hierarchical Z Rate:
1 8×8 tile/clock * 4 DBs * 800 MHz = 204.8 Gpixel/sec

Sample Z rate:
16 /clock * 4 DBs * 800 MHz = 51.2 Gsample/sec

Pixel rate:
4 /clock * 4 DBs * 800 MHz = 12.8 Gpixel/sec