AMD Radeon HD 6770M Mac MXM vs NVIDIA GeForce GT 755M Mac Full Specs

Summary

480 Shaders 675MHz	384 Shaders 1.08GHz
512MB GDDR550.8GB/s	1GB GDDR580GB/s
Peak·FP32·FP16 648 GFLOPS	Peak·FP32·FP16 833.3 GFLOPS
Form Factor MXM-A	Form Factor Soldered
TDP 35W	TDP -

Theoretical Performance

Clock Speed675MHz UC·Boost·OC	Clock Speed1085MHz UC·Boost·OC
Peak OPS 648 GFLOPSFP32	Peak OPS 833.3 GFLOPSFP32
FP32 648 GFLOPS	FP32 833.3 GFLOPS
-	FP64 34.72 GFLOPS
Pixel Rate 5.4 GPixel/s	Pixel Rate 17.4 GPixel/s
Texture Rate 16.2 GTexel/s	Texture Rate 34.7 GTexel/s

Core Config

Shaders 480 Shaders	Shaders 384 Shaders
TMUs 24 TMUs	TMUs 32 TMUs
ROPs 8 ROPs	ROPs 16 ROPs
CUs 6 CUs	SMs 2 SMs

Clocks

Boost Clock 675MHz

Boost Clock 1.08GHz

Cache

L2 Cache 256KB shared

L2 Cache 256KB shared

Memory

512MB GDDR5	1GB GDDR5
Memory Bus 128-bit	Memory Bus 128-bit
Memory Speed 3.2GT/s	Memory Speed 5GT/s
Memory Bandwidth 50.8GB/s	Memory Bandwidth 80GB/s
ECC No	ECC No

Power & Thermals

TDP 35W

TDP -

Video Output

Multi-Monitor 2

Multi-Monitor 2

Encoder

-	Encoder Model NVENC 1
Codec -	Codec AVC (H.264)

Decoder

Decoder Model UVD 3.0	Decoder Model NVDEC 1
Codec MPEG-1 MPEG-2 MPEG-4 VC-1 AVC (H.264)	Codec MPEG-1 MPEG-2 MPEG-4 VC-1 AVC (H.264)

Card

Form Factor MXM-A

Form Factor Soldered

Chip

Manufacturer AMD	Manufacturer NVIDIA
Chip Designer AMD	Chip Designer NVIDIA
Architecture TeraScale 2	Architecture Kepler
Family Radeon HD 6000	Family GeForce 700
Branding	Branding
Codename Turks	Codename NVE7
Chip Variant Turks Pro	Chip Variant -
Market Segment Laptop	Market Segment Laptop
Release Date Jan 4, 2011	Release Date Apr 1, 2013

Fabrication

Foundry TSMC	Foundry TSMC
Fabrication Node 40nm	Fabrication Node 28nm
Die Size 118mm²	Die Size 118mm²
Transistor Count 716 Million	Transistor Count 1.3 Billion
Transistor Density 6.07 MTr/mm²	Transistor Density 10.76 MTr/mm²

Images