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Guru3D.com » Review » Radeon RX 6400 review » Page 1

Radeon RX 6400 review - Introduction

by Hilbert Hagedoorn on: 09/08/2022 01:31 PM [ 3] 10 comment(s)

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Sapphire Radeon RX 6400 Pulse review  

Recently, AMD devoted valuable 6nm silicon to developing two mainstream graphics cards based on the RDNA 2 architecture. The Radeon RX 6500 XT and the Radeon RX 6400 are priced between 160 USD, and they appeal to gamers searching for FHD gaming. After examining the RX 6500 XT, we were disappointed because RX 6400 is based on the same Navi 24 architecture.  Tied towards a PCIe Gen x4 link (3.0/4.0), this card performs at RX 470/480 performance levels as long as you stick to Full HD and do not run our of graphics memory (which is bound to happen fast at 4 GB in ther year 2022). The card are thus positioned as a max 1920x1080 offering and will include a GPU based on NAVI24.  The Navi 24 GPU-based graphics cards are manufactured on a 6nm process and have a maximum of 4 GB of gddr6 memory and yeah, are connected through a very restricted 64-bit memory interface.

The Radeon RX 6400 uses the same Navi 24 silicon as the RX 6500 XT, which was released earlier this year. The RX 6400 is distinguished by activating 12 of the 16 computing units physically present on the silicon, yielding 768 stream processors, 12 Ray Accelerators, 48 TMUs, and 32 ROPs. The processor supports DirectX 12 Ultimate API features like as ray tracing. The memory subsystem is the same as in the RX 6500 XT. You receive 4 GB of GDDR6 memory via a 64-bit wide memory bus at a data rate of 16 Gbps, for a total memory bandwidth of 128 GB/s. 16 MB of on-die Infinity Cache memory helps to accelerate things.

NAVI24

The Navi GPU 24 is manufactured using TSMC's 6 nm process, just as rumors had suggested. The Navi 24 chip should be the last of this generation's chipsets. While doing so, the chip also serves as AMD's first consumer product to be manufactured on a node smaller than 7 nanometers. Navi 24 has a chip area of approximately 107 square millimeters, sufficient room for "up to 16" compute units to be turned on simultaneously. This would result in a total of 1024 computational cores or shader processors. Compared to the size of Navi 23, which powers the Radeon RX 6600 cards, Navi 24 is roughly half the size of Navi 23.  A 16 MB Infinity Cache and up to 4 GB of GDDR6 RAM will be available on a 64-bit memory bus. Thus, the GPU concentrates its efforts on low-cost PCs and games in 1080p resolution.

   

AMD Radeon RX 6000 Series
RX 6900 XTRX 6800XTRX 6800RX 6700 XTRX 6600 XTRX 6500 XTRX 6400
GPU Navi 21 XT(XH) Navi 21 XT Navi 21 XL Navi 22 XT Navi 23 XT Navi 24 XT Navi 24
Cores 5120 4608 3840 2560 2048 1024 768
TMUs 320 288 240 160 128 64 48
ROPs 128 128 96 64 64 32 32
Infinity Cache 128 MB 128 MB 128 MB 96 MB 32 MB 16 MB 16 MB
Boost Clock 2250 MHz 2250 MHz 2105 MHz 2581 MHz 2359 MHz 2825 MHz 2321 MHz
Memory Clock 16 Gbps 16 Gbps 16 Gbps 16 Gbps 16 Gbps 16 Gbps 16 Gbps
Memory 16 GB  16 GB  16 GB  12 GB  8 GB  4 GB  4GB
Memory Bus 256-bit 256-bit 256-bit 192-bit 128-bit 64-bit 64-bit
Bandwidth 512 GB/s 512 GB/s 512 GB/s 384 GB/s 256 GB/s 128 GB/s 128 GB/s
TBP 300W 300W 250W 230W 160W 107 / 120W 53 W
MSRP 999 USD 649 USD 579 USD 479 USD 379 USD 199 USD 159 USD
Launch Date December 2021 November 2021 November 2021 March 2021 August 2021 January 2022 January 2022

 

The RX 6400's main rivals include Nvidia's older GTX 1650 Super and GTX 1650, AMD's previous-generations RX 480 / 5500 XT, and the somewhat more costly RX 6500 XT. Here's how the specifications compare. The cards contain a single DisplayPort and HDMI port.




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