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AMD Radeon HD 6450

Graphics Processor
Caicos
Cores
160
TMUs
8
ROPs
4
Memory Size
512 MB
Memory Type
GDDR5
Bus Width
64 bit
The Radeon HD 6450 was an entry-level graphics card by AMD, launched in April 2011. Built on the 40 nm process, and based on the Caicos graphics processor, in its Caicos PRO variant, the card supports DirectX 11.2. The Caicos graphics processor is a relatively small chip with a die area of only 67 mm² and 370 million transistors. It features 160 shading units, 8 texture mapping units, and 4 ROPs. AMD has paired 512 MB GDDR5 memory with the Radeon HD 6450, which are connected using a 64-bit memory interface. The GPU is operating at a frequency of 625 MHz, memory is running at 800 MHz (3.2 Gbps effective).
Being a single-slot card, the AMD Radeon HD 6450 does not require any additional power connector, its power draw is rated at 18 W maximum. Display outputs include: 1x DVI, 1x HDMI, 1x VGA. Radeon HD 6450 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 168 mm in length, and features a single-slot cooling solution. Its price at launch was 55 US Dollars.

Graphics Processor

GPU Name
Caicos
GPU Variant
Caicos PRO
Architecture
TeraScale 2
Foundry
TSMC
Process Size
40 nm
Transistors
370 million
Die Size
67 mm²

Graphics Card

Release Date
Apr 7th, 2011
Generation
Northern Islands
(HD 6400)
Production
End-of-life
Launch Price
55 USD
Bus Interface
PCIe 2.0 x16
Reviews
14 in our database

Relative Performance

42%
GeForce 210
54%
GeForce 9400 GT
66%
Radeon HD 4550
85%
Radeon HD 5450
100%
Radeon HD 6450
105%
GeForce GT 520
130%
GeForce GT 220
170%
GeForce GT 430
173%
Radeon HD 5570
188%
Radeon HD 4670
198%
GeForce GT 440
202%
GeForce GT 240
232%
GeForce 9600 GT
246%
Radeon HD 5670
264%
GeForce GT 640
273%
GeForce 9800 GT
284%
Radeon HD 6670
293%
Radeon HD 4830
313%
Radeon HD 4770
330%
Radeon HD 4850
338%
GeForce GTS 250
348%
GeForce GTS 450
360%
Radeon HD 5750
411%
Radeon HD 7750
414%
Radeon HD 5770
421%
GeForce GTX 260
427%
Radeon HD 4870
427%
Radeon Vega 8
432%
GeForce GTX 550 Ti
436%
GeForce GTX 650
461%
Radeon HD 5830
485%
Radeon HD 6790
493%
Radeon HD 4890
511%
GeForce GTX 460
515%
Radeon RX Vega 11
520%
GeForce GT 1030
525%
GeForce GTX 275
526%
Radeon HD 7770 GHz Edition
527%
GeForce GTX 280
538%
GeForce GTX 465
564%
Radeon HD 6850
575%
GeForce GTX 285
616%
Radeon HD 5850
628%
GeForce GTX 650 Ti
628%
Radeon HD 7790
654%
Radeon RX 550
656%
GeForce GTX 470
679%
Radeon HD 6870
725%
Radeon HD 5870
748%
GeForce GTX 560 Ti
752%
Radeon HD 4870 X2
765%
GeForce GTX 750 Ti
769%
Radeon HD 6950
796%
GeForce GTX 295
806%
GeForce GTX 650 Ti Boost
811%
Radeon HD 7850
825%
GeForce GTX 480
864%
Radeon HD 6970
881%
Radeon R7 265
895%
Radeon RX 460
895%
Radeon R7 370
898%
GeForce GTX 660
901%
GeForce GTX 570
916%
Radeon RX 560
973%
GeForce GTX 950
981%
Radeon HD 7870 GHz Edition
1005%
Radeon R9 270X
1017%
GeForce GTX 660 Ti
1022%
GeForce GTX 580
1030%
GeForce GTX 1050
1032%
Radeon HD 7950
1053%
Radeon HD 5970
1082%
GeForce GTX 760
1165%
GeForce GTX 670
1195%
GeForce GTX 960
1226%
Radeon R9 380
1233%
Radeon R9 285
1245%
Radeon HD 7970
1258%
GeForce GTX 680
1287%
GeForce GTX 1050 Ti
1321%
GeForce GTX 770
1352%
Radeon HD 6990
1384%
Radeon R9 280X
1404%
GeForce GTX 590
1405%
Radeon HD 7970 GHz Edition
1556%
GeForce GTX 780
1611%
GeForce GTX 1650
1712%
Radeon RX 470
1736%
Radeon R9 290
1830%
Radeon RX 570
1852%
Radeon R9 390
1862%
Radeon R9 290X
1887%
GeForce GTX 970
1912%
GeForce GTX TITAN
1937%
GeForce GTX 780 Ti
1965%
Radeon R9 390X
1974%
Radeon HD 7990
1983%
Radeon RX 480
2000%
GeForce GTX 690
2054%
GeForce GTX 1060 6 GB
2082%
Radeon RX 5500 OEM
2107%
Radeon RX 580
2124%
Radeon RX 5500 XT
2151%
GeForce GTX 980
2170%
GeForce GTX 1650 SUPER
2179%
Radeon R9 FURY
2276%
Radeon RX 590
2397%
Radeon R9 295X2
2410%
GeForce GTX 1660
2438%
Radeon R9 FURY X
2479%
GeForce GTX 980 Ti
2544%
GeForce GTX TITAN X
2707%
GeForce GTX 1660 SUPER
2767%
GeForce GTX 1660 Ti
2767%
GeForce GTX 1070
2945%
Radeon RX Vega 56
3124%
GeForce GTX 1070 Ti
3213%
Radeon RX Vega 64
3258%
GeForce RTX 2060
3258%
GeForce GTX 1080
3392%
Radeon RX 5700
3659%
GeForce RTX 2060 SUPER
3793%
GeForce RTX 2070
3882%
Radeon RX 5700 XT
3927%
Radeon VII
4029%
TITAN X Pascal
4150%
GeForce GTX 1080 Ti
4195%
GeForce RTX 2070 SUPER
4463%
GeForce RTX 2080
4730%
GeForce RTX 2080 SUPER
5221%
GeForce RTX 2080 Ti
6892%
GeForce RTX 3080
8136%
GeForce RTX 3090
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for 2080 Ti and faster.

Clock Speeds

GPU Clock
625 MHz
Memory Clock
800 MHz
3.2 Gbps effective

Memory

Memory Size
512 MB
Memory Type
GDDR5
Memory Bus
64 bit
Bandwidth
25.60 GB/s

Render Config

Shading Units
160
TMUs
8
ROPs
4
Compute Units
2
L1 Cache
8 KB (per CU)
L2 Cache
128 KB

Theoretical Performance

Pixel Rate
2.500 GPixel/s
Texture Rate
5.000 GTexel/s
FP32 (float) performance
200.0 GFLOPS

Board Design

Slot Width
Single-slot
Length
168 mm
6.6 inches
TDP
18 W
Suggested PSU
350 W
Outputs
1x DVI
1x HDMI
1x VGA
Power Connectors
None
Board Number
C264

Graphics Features

DirectX
11.2 (11_0)
OpenGL
4.4
OpenCL
1.2
Vulkan
N/A
Shader Model
5.0

Caicos GPU Notes

Architecture Codename: Northern Islands
Graphics/Compute: GFX4
Display Core Engine: 5.0
Unified Video Decoder: 3.1

Retail boards based on this design (17)

Name GPU Clock Memory Clock Other Changes
AMD Radeon HD 6450 750 MHz 900 MHz
AMD Radeon HD 6450 2 GB 650 MHz 580 MHz 2 GB, DDR3
AREZ HD 6450 Silent Low Profile 1 GB 625 MHz 600 MHz 1024 MB, DDR3
ASUS HD 6450 Silent Low Profile 1 GB 625 MHz 600 MHz 1024 MB, GDDR3
ASUS HD 6450 Silent Low Profile 2 GB 650 MHz 600 MHz 2 GB, GDDR3
GIGABYTE HD 6450 1 GB 625 MHz 550 MHz 1024 MB, DDR3, 183 mm/7.2 inches
GIGABYTE HD 6450 1 GB Rev. 2.0 625 MHz 500 MHz 1024 MB, DDR3
PCYES HD 6450 Low Profile 2 GB 625 MHz 667 MHz 2 GB, DDR3
Sapphire HD 6450 625 MHz 800 MHz 1x DVI 1x DisplayPort 1x VGA
Sapphire HD 6450 1 GB 625 MHz 800 MHz 1024 MB, DDR3, 180 mm/7.1 inches, Dual-slot, 2x DVI 1x HDMI
Sapphire HD 6450 FleX 1 GB 625 MHz 800 MHz 1024 MB, DDR3, 180 mm/7.1 inches, Dual-slot, 2x DVI 1x HDMI
Sapphire HD 6450 Gold Edition 1 GB 625 MHz 667 MHz 1024 MB, DDR3
Sapphire HD 6450 Gold Edition 2 GB 625 MHz 667 MHz 2 GB, DDR3
Sapphire HD 6450 HyperMemory 625 MHz 667 MHz 146 mm/5.7 inches, 1x DVI 1x VGA 1x S-Video
Sapphire HD 6450 OC 750 MHz 800 MHz 1x DVI 1x DisplayPort 1x VGA
Sapphire HD 6450 Platinum Edition 625 MHz 800 MHz
XFX TSK HD 6450 X64 625 MHz 533 MHz 1024 MB, DDR3, 1x DVI