AMD Radeon HD 6870 1600SP Edition vs AMD Radeon HD 7770 GHz Edition

Table of Contents

Graphics Processor

GPU model Cypress Cape Verde
GPU variant Cypress XT (215-0735033) Cape Verde XT
Architecture TeraScale 2 GCN 1.0
Foundry TSMC TSMC
Manufacturing process 40 nm 28 nm
Number of transistors 2,154 million 1,500 million
Die size 334 mm² 123 mm²

Graphics Card

Release date Jan 14th, 2013 Feb 15th, 2012
Generation Northern Islands Southern Islands
Production End-of-life End-of-life
Interface PCIe 2.0 x16 PCIe 3.0 x16
Reviews 170 in our database 97 in our database
Predecessor Evergreen Northern Islands
Successor Southern Islands Sea Islands
Launch price 159 USD

Clocks

GPU clock 850 MHz 1000 MHz
Memory clock 1050 MHz 4.2 Gbps effective 1125 MHz 4.5 Gbps effective

Memory Configuration

Memory size 1024 MB 1024 MB
Memory type GDDR5 GDDR5
Memory bus width 256 bit 128 bit
Bandwidth 134.4 GB/s 72.00 GB/s

Render Configuration

Shading units 1600 640
TMUs 80 40
ROPs 32 16
Compute units 20 10
Cache L1 8 KB (per CU) 16 KB (per CU)
Cache L2 512 KB 256 KB

Performance

Pixel rate 27.20 GPixel/s 16.00 GPixel/s
Texture rate 68.00 GTexel/s 40.00 GTexel/s
FP32 (float) performance 2.720 TFLOPS 1,280 GFLOPS
FP64 (double) performance 544.0 GFLOPS (1:5) 80.00 GFLOPS (1:16)

Dimensions & Outputs

Slot width Dual-slot Dual-slot
Length 282 mm 11.1 inches 210 mm 8.3 inches
TDP 175 W 80 W
Suggested PSU 450 W 250 W
Outputs 2x DVI1x HDMI2x mini-DisplayPort 1x DVI1x HDMI2x mini-DisplayPort
Power connectors 2x 6-pin 1x 6-pin
Board number C008, E140 C441, C468

API Support & Features

DirectX 11.2 (11_0) 12 (11_1)
OpenGL 4.4 4.6
OpenCL 1.2 1.2
Vulkan 1.2
Shader model 5.0 5.1

Other Features

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