NVIDIA GeForce 840A vs NVIDIA GeForce Go 6800 Ultra

VS

NVIDIA GeForce 840A

NVIDIA GeForce Go 6800 Ultra

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840A and 256MB VRAM GeForce Go 6800 Ultra to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840A 's Advantages

Released 9 years and 1 months late

Boost Clock1124MHz

More VRAM (2GB vs 256GB)

384 additional rendering cores

Lower TDP (33W vs 89W)

NVIDIA GeForce Go 6800 Ultra 's Advantages

Larger VRAM bandwidth (38.40GB/s vs 16.02GB/s)

Score

GeForce 840A

VS

GeForce Go 6800 Ultra

Graphics Card

Mar 2014

Release Date

Feb 2005

GeForce 800A

Generation

GeForce Go 6

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 1.0 x16

Clock Speeds

1029 MHz

Base Clock

-

1124 MHz

Boost Clock

-

1001 MHz

Memory Clock

600 MHz

Memory

2GB

Memory Size

256MB

DDR3

Memory Type

GDDR3

64bit

Memory Bus

256bit

16.02GB/s

Bandwidth

38.40GB/s

Render Config

-

384

Shading Units

-

16

TMUs

12

8

ROPs

8

-

64 KB (per SMM)

L1 Cache

-

1024 KB

L2 Cache

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

3.600 GPixel/s

17.98 GTexel/s

Texture Rate

5.400 GTexel/s

-

863.2 GFLOPS

FP32 (float)

-

26.98 GFLOPS

FP64 (double)

-

Board Design

33W

TDP

89W

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Processor

GM108

GPU Name

NV41

-

GPU Variant

GO6800 U

Maxwell

Architecture

Curie

TSMC

Foundry

TSMC

28 nm

Process Size

130 nm

Unknown

Transistors

0.19 billion

Unknown

Die Size

225 mm²

Graphics Features

12 (11_0)

DirectX

9.0c (9_3)

4.6

OpenGL

2.0 (full) 2.1 (partial)

3.0

OpenCL

N/A

1.3

Vulkan

N/A

5.0

CUDA

-

5.1

Shader Model

3.0

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