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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 on April 7th, 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)
Predecessor
Evergreen
Successor
Southern Islands
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
106%
GeForce GT 520
131%
GeForce GT 220
171%
GeForce GT 430
173%
Radeon HD 5570
188%
Radeon HD 4670
198%
GeForce GT 440
202%
GeForce GT 240
232%
GeForce 9600 GT
247%
Radeon HD 5670
265%
GeForce GT 640
273%
GeForce 9800 GT
285%
Radeon HD 6670
294%
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
422%
GeForce GTX 260
427%
Radeon HD 4870
428%
Radeon Vega 8
432%
GeForce GTX 550 Ti
436%
GeForce GTX 650
461%
Radeon HD 5830
485%
Radeon HD 6790
493%
Radeon HD 4890
512%
GeForce GTX 460
515%
Radeon RX Vega 11
521%
GeForce GT 1030
525%
GeForce GTX 275
527%
Radeon HD 7770 GHz Edition
528%
GeForce GTX 280
538%
GeForce GTX 465
564%
Radeon HD 6850
575%
GeForce GTX 285
617%
Radeon HD 5850
628%
Radeon HD 7790
628%
GeForce GTX 650 Ti
655%
Radeon RX 550
656%
GeForce GTX 470
680%
Radeon HD 6870
726%
Radeon HD 5870
748%
GeForce GTX 560 Ti
752%
Radeon HD 4870 X2
766%
GeForce GTX 750 Ti
770%
Radeon HD 6950
797%
GeForce GTX 295
806%
GeForce GTX 650 Ti Boost
812%
Radeon HD 7850
826%
GeForce GTX 480
865%
Radeon HD 6970
881%
Radeon R7 265
895%
Radeon RX 460
896%
Radeon R7 370
899%
GeForce GTX 660
901%
GeForce GTX 570
916%
Radeon RX 560
973%
GeForce GTX 950
982%
Radeon HD 7870 GHz Edition
1006%
Radeon R9 270X
1018%
GeForce GTX 660 Ti
1023%
GeForce GTX 580
1031%
GeForce GTX 1050
1033%
Radeon HD 7950
1053%
Radeon HD 5970
1083%
GeForce GTX 760
1166%
GeForce GTX 670
1196%
GeForce GTX 960
1227%
Radeon R9 380
1234%
Radeon R9 285
1246%
Radeon HD 7970
1259%
GeForce GTX 680
1288%
GeForce GTX 1050 Ti
1322%
GeForce GTX 770
1353%
Radeon HD 6990
1385%
Radeon R9 280X
1405%
GeForce GTX 590
1406%
Radeon HD 7970 GHz Edition
1557%
GeForce GTX 780
1613%
GeForce GTX 1650
1714%
Radeon RX 470
1737%
Radeon R9 290
1831%
Radeon RX 570
1854%
Radeon R9 390
1864%
Radeon R9 290X
1888%
GeForce GTX 970
1913%
GeForce GTX TITAN
1939%
GeForce GTX 780 Ti
1967%
Radeon R9 390X
1975%
Radeon HD 7990
1985%
Radeon RX 480
2001%
GeForce GTX 690
2056%
GeForce GTX 1060 6 GB
2084%
Radeon RX 5500 OEM
2109%
Radeon RX 580
2125%
Radeon RX 5500 XT
2144%
Radeon RX 6500 XT
2153%
GeForce GTX 980
2172%
GeForce GTX 1650 SUPER
2180%
Radeon R9 FURY
2278%
Radeon RX 590
2399%
Radeon R9 295X2
2412%
GeForce GTX 1660
2440%
Radeon R9 FURY X
2481%
GeForce GTX 980 Ti
2546%
GeForce GTX TITAN X
2709%
GeForce GTX 1660 SUPER
2769%
GeForce GTX 1660 Ti
2769%
GeForce GTX 1070
2948%
Radeon RX Vega 56
3126%
GeForce GTX 1070 Ti
3173%
Radeon RX 5600 XT
3216%
Radeon RX Vega 64
3260%
GeForce GTX 1080
3260%
GeForce RTX 2060
3394%
Radeon RX 5700
3662%
GeForce RTX 2060 SUPER
3796%
GeForce RTX 2070
3872%
GeForce RTX 3060
3886%
Radeon RX 5700 XT
3930%
Radeon VII
4032%
TITAN X Pascal
4154%
GeForce GTX 1080 Ti
4198%
GeForce RTX 2070 SUPER
4332%
Radeon RX 6600 XT
4466%
GeForce RTX 2080
4734%
GeForce RTX 2080 SUPER
4850%
GeForce RTX 3060 Ti
4934%
Radeon RX 6700 XT
5315%
GeForce RTX 2080 Ti
5680%
GeForce RTX 3070
6077%
GeForce RTX 3070 Ti
6261%
Radeon RX 6800
7185%
Radeon RX 6800 XT
7381%
GeForce RTX 3080
7810%
Radeon RX 6900 XT
8269%
GeForce RTX 3080 Ti
8350%
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
200 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