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Guru3D.com » Review » AMD Radeon VII 16 GB review (updated) » Page 5

AMD Radeon VII 16 GB review (updated) - Architecture and Specifications

by Hilbert Hagedoorn on: 03/05/2019 07:43 PM [ 5] 403 comment(s)

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Product overview

Vega 20 is being fabbed on the latest 7nm process technology, which is the densest foundry process available in an effort to reduce power consumption, die size and lower operating voltages. For the last six years, graphics processors have relied on 28nm high-k/metal nodes.

 

 

Two years ago we moved towards the last gen 14nm FinFET, and now we can half the size with 7nm node fabrication.Where Vega had a 56 and 64 edition, the Radeon VII  will have just one card, fitted with 16 GB of HBM2 graphics memory, four stacks thus with a 4096-bit memory bus. The card as such will offer 1 TB/s of memory bandwidth. So when we break down the products in a more simplistic way we see the following: 

 

AMD Radeon Radeon VII RX Vega 64 LCS RX Vega 64 LE RX Vega 56 RX 580
Graphics Core Vega 20 Vega 10 Vega 10 Vega 10 Polaris 20 XTX
Fabrication Process 7nm 14 nm 14 nm 14 nm 14 nm
Single Precision fp32 14.2 TFLOPs 13.7 TFLOPs 12.66 TFLOPs  10.5 TFLOPs 6.1 TFLOPs
Memory 16GB HBM2 8GB HBM2 8GB HBM2 8 GB HBM2 4/8 GB GDDR5
Clock Frequency 
Base / Boost
1400 MHz
1750 MHz
1,406 MHz
1,677 MHz
1,247 MHz
1,546 MHz
1,156 MHz
1,471 MHz
1,257 MHz
1,340 MHz
Compute Units 60 64 64 56 36
Shader Processors 3840 4096 4096 3584 2304
Memory Interface 4096-bit 2048-bit 2048-bit 2048-bit 256-bit
ROPs 64 64 64 64 32
TMUs 240 256 256 224 144
Memory Speed 1000 MHz 945 MHz 945 MHz 800 MHz 8 Gbps
Memory Bandwidth 1 TB/s 484 GB/s 484 GB/s 410 GB/s 256 GB/s
Board power 300 W 435 W 295 W 210 W 185 W
MSRP 699 USD 600 USD 499 USD 399 USD $199 (4 GB)
$229 (8 GB)

 

AMD has not unlocked the entire GPU, normally the Vega GPU is based on 64 shader clusters with 64 shader processors each. So that would make 4096 shader processors in total. AMD enabled 60 clusters (shader partitions), tied to 64 ROPs. TMUs wise for a fully enabled unit AMD has always used a 4:1 ratio meaning 60 CUs x 4 = 240 texture units.

 

Vega 64 Air cooled

(64 CU Peak 1630MHz)

Radeon VII

(60 CU Peak 1800 MHz)

MI60

(64 CU Peak 1800 MHz)

Peak FP 64

0.84 TFLOPS

3.46 TFLOPS

7.4 TFLOPS

Peak FP 32

13.4 TFLOPS

13.8 TFLOPS

14.7 TFLOPS

Peak FP 16

26.7 TFLOPS

27.7 TFLOPS

29.5 TFLOPS

Peak Int 8

53.4 TOPS

55.3 TOPS

59 TOPS

Peak Int 4

106.8 TOPS

110.7 TOPS

118.0 TOPS

  

Double precision (fp64), the cards are setup in a 1:4 ratio configuration for fp64. The Radeon VII graphics card was created for gamers and creators, enthusiasts and early adopters. AMD offers double precision compute performance to 3.46 TFLOPS (DP=1/4SP).




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