AMD Radeon HD 7790 vs AMD Radeon RX 455 OEM

Table of Contents

Graphics Processor

GPU model Bonaire Tobago
GPU variant Bonaire XT (215-0839039) Tobago PRO (215-0875010)
Architecture GCN 2.0 GCN 2.0
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 2,080 million 2,080 million
Die size 160 mm² 160 mm²

Graphics Card

Release date Mar 22nd, 2013 Jun 30th, 2016
Generation Southern Islands Arctic Islands
Production End-of-life End-of-life
Launch price 149 USD
Interface PCIe 3.0 x16 PCIe 3.0 x16
Reviews 93 in our database
Predecessor Northern Islands Pirate Islands
Successor Sea Islands Polaris

Clocks

GPU clock 1000 MHz 1050 MHz
Memory clock 1500 MHz 6 Gbps effective 1625 MHz 6.5 Gbps effective

Memory Configuration

Memory size 1024 MB 2 GB
Memory type GDDR5 GDDR5
Memory bus width 128 bit 128 bit
Bandwidth 96.00 GB/s 104.0 GB/s

Render Configuration

Shading units 896 768
TMUs 56 48
ROPs 16 16
Compute units 14 12
Cache L1 16 KB (per CU) 16 KB (per CU)
Cache L2 256 KB 256 KB

Performance

Pixel rate 16.00 GPixel/s 16.80 GPixel/s
Texture rate 56.00 GTexel/s 50.40 GTexel/s
FP32 (float) performance 1.792 TFLOPS 1.613 TFLOPS
FP64 (double) performance 112.0 GFLOPS (1:16) 100.8 GFLOPS (1:16)

Dimensions & Outputs

Slot width Dual-slot Single-slot
Length 183 mm 7.2 inches 165 mm 6.5 inches
TDP 85 W 100 W
Suggested PSU 250 W 300 W
Outputs 1x DVI1x HDMI2x mini-DisplayPort 1x DVI1x HDMI1x DisplayPort
Power connectors 1x 6-pin 1x 6-pin
Board number C582 C582, C936

API Support & Features

DirectX 12 (12_0) 12 (12_0)
OpenGL 4.6 4.6
OpenCL 2.0 2.0
Vulkan 1.2 1.2
Shader model 6.3 6.3

Other Features

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