AMD Radeon HD 6870 X2 vs NVIDIA GeForce GTX 660 OEM

VS

AMD Radeon HD 6870 X2

NVIDIA GeForce GTX 660 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 1536MB VRAM GeForce GTX 660 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 OEM 's Advantages

Released 1 years and 1 months late

Boost Clock888MHz

More VRAM (1536GB vs 1024GB)

32 additional rendering cores

Lower TDP (130W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 X2

2.016 TFLOPS

GeForce GTX 660 OEM +1%

2.046 TFLOPS

Radeon HD 6870 X2

VS

GeForce GTX 660 OEM

Graphics Card

Jul 2011

Release Date

Aug 2012

Northern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

823 MHz

-

Boost Clock

888 MHz

1050 MHz

Memory Clock

1400 MHz

Memory

1024MB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

134.4GB/s

Bandwidth

134.4GB/s

Render Config

14

Compute Units

-

1120

Shading Units

1152

56

TMUs

96

32

ROPs

24

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

384 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

21.31 GPixel/s

50.40 GTexel/s

Texture Rate

85.25 GTexel/s

-

2.016 TFLOPS

FP32 (float)

2.046 TFLOPS

-

FP64 (double)

85.25 GFLOPS

Board Design

300W

TDP

130W

700 W

Suggested PSU

300 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

-

Power Connectors

1x 6-pin

Graphics Processor

Barts

GPU Name

GK104

Barts XT (215-0798000)

GPU Variant

GK104-200-KD-A2

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

3.54 billion

255 mm²

Die Size

294 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

5.0

Shader Model

5.1

Related GPU Comparisons

1

AMD Radeon HD 6870 X2 vs NVIDIA T600

2

AMD Radeon HD 6870 X2 vs AMD Radeon RX 5300

3

AMD Radeon HD 6870 X2 vs AMD Radeon HD 8670 OEM

4

AMD Radeon HD 6870 X2 vs NVIDIA GeForce 8600 GT

5

AMD Radeon HD 6870 X2 vs AMD FirePro V5900

6

AMD Radeon HD 6870 X2 vs NVIDIA RTX 4000 Ada Generation

7

AMD Radeon HD 6870 X2 vs AMD Radeon RX 560 XT

8

AMD Radeon HD 6870 X2 vs NVIDIA GeForce GTX 560 Ti 448

9

AMD Radeon HD 6870 X2 vs NVIDIA GeForce GTX 1080 11Gbps

10

AMD Radeon HD 6870 X2 vs ATI FirePro V3900

Related News

1

Continuous Decline in DRAM Memory Prices: Downward Trend Intensifies

2

NVIDIA GB202 Chip Unveiled for the First Time, to be Used in RTX 5090 with 512-bit GDDR7 Memory

3

Strix Halo Integrated Graphics Score Appears on Passmark, Currently Slightly Below RTX 3060 12GB

4

AMD Unveils New RX 9070 XT Graphics Card Performance: Positioned Between RX 7900 GRE and RX 7900 XT

5

Double the Excitement! AMD FSR 4.0 to Launch Alongside RX 9070 XT Graphics Card

6

CPU-Z Minor Update: Support for Intel's Four New Products and New Memory

7

CXMT Reportedly Achieves 80% Yield in DDR5 Production

8

Intel Wildcat Lake Appears on Shipping List with FCBGA1516 Socket, Poised to Replace Alder Lake-N

9

The Commencement of ARM and Qualcomm Licensing Dispute Trial: Potential Major Impact on PC Market

10

NVIDIA Allegedly Equips RTX 5080 with 30Gbps Memory Speed, Other Models to Feature 28Gbps