AMD Radeon HD 7870 XT vs NVIDIA GeForce GT 640 Rev. 2

VS

AMD Radeon HD 7870 XT

NVIDIA GeForce GT 640 Rev. 2

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 1024MB VRAM GeForce GT 640 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 XT 's Advantages

Boost Clock975MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (192.0GB/s vs 40.06GB/s)

1152 additional rendering cores

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Released 6 months late

Lower TDP (49W vs 185W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT +272%

2.995 TFLOPS

GeForce GT 640 Rev. 2

0.803 TFLOPS

Radeon HD 7870 XT

VS

GeForce GT 640 Rev. 2

Graphics Card

Nov 2012

Release Date

May 2013

Southern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x8

Clock Speeds

925 MHz

Base Clock

-

975 MHz

Boost Clock

-

1500 MHz

Memory Clock

1252 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

192.0GB/s

Bandwidth

40.06GB/s

Render Config

24

Compute Units

-

1536

Shading Units

384

96

TMUs

32

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

8.368 GPixel/s

93.60 GTexel/s

Texture Rate

33.47 GTexel/s

-

2.995 TFLOPS

FP32 (float)

803.3 GFLOPS

748.8 GFLOPS

FP64 (double)

33.47 GFLOPS

Board Design

185W

TDP

49W

450 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

2x 6-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

GK208

Tahiti LE (215-0821122)

GPU Variant

GK208-400-A1

GCN 1.0

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

1.02 billion

352 mm²

Die Size

87 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

3.5

5.1

Shader Model

5.1

Related GPU Comparisons

1

AMD Radeon HD 7870 XT vs NVIDIA GeForce GT 640 OEM

2

AMD Radeon HD 7870 XT vs NVIDIA GeForce RTX 5070 Ti

3

AMD Radeon HD 7870 XT vs NVIDIA GeForce RTX 4050

4

AMD Radeon HD 7870 XT vs ATI Radeon HD 2600 PRO

5

AMD Radeon HD 7870 XT vs NVIDIA GeForce GTX 745 OEM

6

AMD Radeon HD 7870 XT vs AMD Radeon RX 5700

7

AMD Radeon HD 7870 XT vs AMD Radeon RX 570

8

AMD Radeon HD 7870 XT vs AMD FirePro S9000

9

AMD Radeon HD 7870 XT vs ATI Radeon HD 4670

10

AMD Radeon HD 7870 XT vs ATI FirePro V8700

Related News

1

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

2

Intel Reports High Return Rates for Devices Featuring Snapdragon X Series; Qualcomm Counters with 'Industry Standard' Claim

3

Intel Confirms Panther Lake Adopts 18A Process, ES0 Samples Already Sent to Customers

4

Complete Lineup of Core Ultra 200HX/H/U and Core 200H/U Revealed: 31 Models to Dazzle the Eyes

5

Amechi Unveils V1 Mini PC: Only 0.33L Volume with 150W Power Consumption

6

iPhone 17 Series Set for Major Design Overhaul: Camera Module Transformed into Sleek Strip

7

The Thinnest iPhone Ever! iPhone 17 Air Reportedly Enters Foxconn's NPI Stage

8

Apple Allegedly Cancels M4 Extreme, Originally Planned for Mac Pro with 64-Core CPU and 160-Core GPU

9

Cyberpunk 2077 Update 2.2: Intel Arrow Lake Gaming Performance Soars by 33%!

10

Intel Finally Achieves Frame Generation! 'F1 24' Becomes the First XeSS 2 Game