AMD Radeon HD 7950 Mac Edition vs AMD Radeon Sky 500

Table of Contents

Graphics Processor

GPU model Tahiti Pitcairn
GPU variant Tahiti PRO (215-0821056) Pitcairn XT GL (215-0828073)
Architecture GCN 1.0 GCN 1.0
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 4,313 million 2,800 million
Die size 352 mm² 212 mm²

Graphics Card

Release date Mar 7th, 2013 Mar 27th, 2013
Generation Southern Islands Radeon Sky
Production End-of-life End-of-life
Launch price 449 USD
Interface PCIe 3.0 x16 PCIe 3.0 x16
Reviews 118 in our database
Predecessor Northern Islands
Successor Sea Islands

Clocks

GPU clock 800 MHz 950 MHz
Memory clock 1250 MHz 5 Gbps effective 1200 MHz 4.8 Gbps effective

Memory Configuration

Memory size 3 GB 4 GB
Memory type GDDR5 GDDR5
Memory bus width 384 bit 256 bit
Bandwidth 240.0 GB/s 153.6 GB/s

Render Configuration

Shading units 1792 1280
TMUs 112 80
ROPs 32 32
Compute units 28 20
Cache L1 16 KB (per CU) 16 KB (per CU)
Cache L2 768 KB 512 KB

Performance

Pixel rate 25.60 GPixel/s 30.40 GPixel/s
Texture rate 89.60 GTexel/s 76.00 GTexel/s
FP32 (float) performance 2.867 TFLOPS 2.432 TFLOPS
FP64 (double) performance 716.8 GFLOPS (1:4) 152.0 GFLOPS (1:16)

Dimensions & Outputs

Slot width Dual-slot Single-slot
Length 279 mm 11 inches 242 mm 9.5 inches
TDP 200 W 150 W
Suggested PSU 550 W 450 W
Outputs 1x DVI1x HDMI2x mini-DisplayPort 1x DisplayPort
Power connectors 2x 6-pin 1x 6-pin
Board number C381
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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