Radeon RX 6400 vs HD 6450 GDDR5

Place in the ranking	1121	285
Place by popularity	not in top-100	92
Cost-effectiveness evaluation	no data	53.19
Power efficiency	2.47	25.75
Architecture	Terascale 2 (2009−2015)	RDNA 2.0 (2020−2024)
GPU code name	Caicos	Navi 24
Market segment	Desktop	Desktop
Release date	18 April 2011 (13 years ago)	19 January 2022 (3 years ago)
Launch price (MSRP)	no data	$159

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	160	768
Core clock speed	750 MHz	1923 MHz
Boost clock speed	no data	2321 MHz
Number of transistors	no data	5,400 million
Manufacturing process technology	40 nm	6 nm
Power consumption (TDP)	27 Watt	53 Watt
Texture fill rate	no data	111.4
Floating-point processing power	no data	3.565 TFLOPS
ROPs	no data	32
TMUs	no data	48
Ray Tracing Cores	no data	12

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	no data	PCIe 4.0 x4
Width	no data	1-slot
Supplementary power connectors	no data	None

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR5	GDDR6
Maximum RAM amount	1 GB	4 GB
Memory bus width	64 Bit	64 Bit
Memory clock speed	900 MHz	2000 MHz
Memory bandwidth	no data	128.0 GB/s
Shared memory	-	-

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors	no data	1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI	-	+

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	11	12 Ultimate (12_2)
Shader Model	no data	6.7
OpenGL	no data	4.6
OpenCL	no data	2.2
Vulkan	-	1.3

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

900p	7 −1900%	140−150 +1900%
Full HD	15 −1900%	300−350 +1900%
1200p	5 −1900%	100−110 +1900%

Cost per frame, $

1080p

no data

0.53

FPS performance in popular games

Full HD
Low Preset

Counter-Strike 2	9−10 −1900%	180−190 +1900%
Cyberpunk 2077	4−5 −1900%	80−85 +1900%

Full HD
Medium Preset

Counter-Strike 2	9−10 −1900%	180−190 +1900%
Cyberpunk 2077	4−5 −1900%	80−85 +1900%
Forza Horizon 4	8−9 −1900%	160−170 +1900%
Red Dead Redemption 2	6−7 −1900%	120−130 +1900%

Full HD
High Preset

Counter-Strike 2	9−10 −1900%	180−190 +1900%
Cyberpunk 2077	4−5 −1900%	80−85 +1900%
Far Cry 5	9−10 −1900%	180−190 +1900%
Fortnite	3−4 −1900%	60−65 +1900%
Forza Horizon 4	8−9 −1900%	160−170 +1900%
PLAYERUNKNOWN'S BATTLEGROUNDS	12−14 −1900%	240−250 +1900%
Red Dead Redemption 2	6−7 −1900%	120−130 +1900%
The Witcher 3: Wild Hunt	6−7 −1900%	120−130 +1900%
World of Tanks	29 −1797%	550−600 +1797%

Full HD
Ultra Preset

Counter-Strike 2	9−10 −1900%	180−190 +1900%
Cyberpunk 2077	4−5 −1900%	80−85 +1900%
Far Cry 5	9−10 −1900%	180−190 +1900%
Forza Horizon 4	8−9 −1900%	160−170 +1900%
PLAYERUNKNOWN'S BATTLEGROUNDS	12−14 −1900%	240−250 +1900%

1440p
High Preset

PLAYERUNKNOWN'S BATTLEGROUNDS	5−6 −1900%	100−105 +1900%
World of Tanks	5−6 −1900%	100−105 +1900%

1440p
Ultra Preset

Counter-Strike 2	1−2 −1700%	18−20 +1700%
Cyberpunk 2077	3−4 −1900%	60−65 +1900%
Far Cry 5	5−6 −1900%	100−105 +1900%
The Witcher 3: Wild Hunt	4−5 −1900%	80−85 +1900%
Valorant	6−7 −1900%	120−130 +1900%

4K
High Preset

Counter-Strike 2	8−9 −1900%	160−170 +1900%
Dota 2	14−16 −1900%	300−310 +1900%
Grand Theft Auto V	14−16 −1900%	300−310 +1900%
PLAYERUNKNOWN'S BATTLEGROUNDS	3−4 −1900%	60−65 +1900%
Red Dead Redemption 2	0−1	0−1
The Witcher 3: Wild Hunt	14−16 −1900%	300−310 +1900%

4K
Ultra Preset

Battlefield 5	1−2 −1700%	18−20 +1700%
Counter-Strike 2	8−9 −1900%	160−170 +1900%
Cyberpunk 2077	2−3 −1900%	40−45 +1900%
Dota 2	14−16 −1900%	300−310 +1900%
Far Cry 5	0−1	0−1
Valorant	1−2 −1700%	18−20 +1700%

This is how HD 6450 GDDR5 and RX 6400 compete in popular games:

RX 6400 is 1900% faster in 900p
RX 6400 is 1900% faster in 1080p
RX 6400 is 1900% faster in 1200p

Pros & cons summary

Performance score	0.93	19.07
Recency	18 April 2011	19 January 2022
Maximum RAM amount	1 GB	4 GB
Chip lithography	40 nm	6 nm
Power consumption (TDP)	27 Watt	53 Watt

HD 6450 GDDR5 has 96.3% lower power consumption.

RX 6400, on the other hand, has a 1950.5% higher aggregate performance score, an age advantage of 10 years, a 300% higher maximum VRAM amount, and a 566.7% more advanced lithography process.

The Radeon RX 6400 is our recommended choice as it beats the Radeon HD 6450 GDDR5 in performance tests.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.