AMD Radeon HD 7870 GHz Edition vs AMD Radeon Sky 500

Table of Contents

Graphics Processor

GPU model Pitcairn Pitcairn
GPU variant Pitcairn XT (215-0828047) Pitcairn XT GL (215-0828073)
Architecture GCN 1.0 GCN 1.0
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 2,800 million 2,800 million
Die size 212 mm² 212 mm²

Graphics Card

Release date Mar 5th, 2012 Mar 27th, 2013
Generation Southern Islands Radeon Sky
Production End-of-life End-of-life
Launch price 349 USD
Interface PCIe 3.0 x16 PCIe 3.0 x16
Reviews 95 in our database
Predecessor Northern Islands
Successor Sea Islands

Clocks

GPU clock 1000 MHz 950 MHz
Memory clock 1200 MHz 4.8 Gbps effective 1200 MHz 4.8 Gbps effective

Memory Configuration

Memory size 2 GB 4 GB
Memory type GDDR5 GDDR5
Memory bus width 256 bit 256 bit
Bandwidth 153.6 GB/s 153.6 GB/s

Render Configuration

Shading units 1280 1280
TMUs 80 80
ROPs 32 32
Compute units 20 20
Cache L1 16 KB (per CU) 16 KB (per CU)
Cache L2 512 KB 512 KB

Performance

Pixel rate 32.00 GPixel/s 30.40 GPixel/s
Texture rate 80.00 GTexel/s 76.00 GTexel/s
FP32 (float) performance 2.560 TFLOPS 2.432 TFLOPS
FP64 (double) performance 160.0 GFLOPS (1:16) 152.0 GFLOPS (1:16)

Dimensions & Outputs

Slot width Dual-slot Single-slot
Length 241 mm 9.5 inches 242 mm 9.5 inches
TDP 175 W 150 W
Suggested PSU 450 W 450 W
Outputs 1x DVI1x HDMI2x mini-DisplayPort 1x DisplayPort
Power connectors 2x 6-pin 1x 6-pin
Board number C401-47
Width 111 mm 4.4 inches

API Support & Features

DirectX 12 (11_1) 12 (11_1)
OpenGL 4.6 4.6
OpenCL 1.2 1.2
Vulkan 1.2 1.2
Shader model 5.1 5.1

Other Features

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