AMD Radeon HD 7990 vs NVIDIA GeForce GTX 660 OEM

VS

AMD Radeon HD 7990

NVIDIA GeForce GTX 660 OEM

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 1536MB VRAM GeForce GTX 660 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7990 's Advantages

Released 8 months late

Boost Clock has increased by 13% (1000MHz vs 888MHz)

More VRAM (3GB vs 1536GB)

Larger VRAM bandwidth (288.0GB/s vs 134.4GB/s)

896 additional rendering cores

NVIDIA GeForce GTX 660 OEM 's Advantages

Lower TDP (130W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990 +100%

4.096 TFLOPS

GeForce GTX 660 OEM

2.046 TFLOPS

Radeon HD 7990

VS

GeForce GTX 660 OEM

Graphics Card

Apr 2013

Release Date

Aug 2012

Southern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

950 MHz

Base Clock

823 MHz

1000 MHz

Boost Clock

888 MHz

1500 MHz

Memory Clock

1400 MHz

Memory

3GB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

192bit

288.0GB/s

Bandwidth

134.4GB/s

Render Config

32

Compute Units

-

2048

Shading Units

1152

128

TMUs

96

32

ROPs

24

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

768 KB

L2 Cache

384 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

21.31 GPixel/s

128.0 GTexel/s

Texture Rate

85.25 GTexel/s

-

4.096 TFLOPS

FP32 (float)

2.046 TFLOPS

1024 GFLOPS

FP64 (double)

85.25 GFLOPS

Board Design

375W

TDP

130W

750 W

Suggested PSU

300 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

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

2x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Malta

GPU Name

GK104

Malta XT (215-0849026)

GPU Variant

GK104-200-KD-A2

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

3.54 billion

365 mm²

Die Size

294 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

Related GPU Comparisons

1

AMD Radeon HD 7990 vs NVIDIA GeForce GTX 260 OEM

2

AMD Radeon HD 7990 vs ATI Radeon HD 2900 PRO

3

AMD Radeon HD 7990 vs AMD Radeon HD 8550 OEM

4

AMD Radeon HD 7990 vs NVIDIA GeForce GTX 480

5

AMD Radeon HD 7990 vs AMD Radeon RX 6600 LE

6

AMD Radeon HD 7990 vs AMD Radeon 550

7

AMD Radeon HD 7990 vs NVIDIA GeForce GT 630

8

AMD Radeon HD 7990 vs NVIDIA CMP 50HX

9

AMD Radeon HD 7990 vs ATI Radeon X1050

10

AMD Radeon HD 7990 vs AMD Radeon R5 240 OEM

Related News

1

AMD's Thunderous Strike: Ryzen 9 9950X3D Performance Scores Revealed for the First Time!

2

Continuous Decline in DRAM Memory Prices: Downward Trend Intensifies

3

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

4

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

5

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

6

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

7

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

8

CXMT Reportedly Achieves 80% Yield in DDR5 Production

9

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

10

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