Tag Archives: AMD Radeon RX 6700 XT

Smart Access Memory Now Enabled For Ryzen 3000 CPUs!

Smart Access Memory Now Enabled For Ryzen 3000 CPUs!

AMD just enabled Smart Access Memory for select Ryzen 3000 desktop processors!

Find out what Smart Access Memory does, and how to enable it for a FREE boost in performance!

 

Smart Access Memory Now Enabled For Ryzen 3000 CPUs!

When AMD launched the Radeon RX 6700 XT graphics card, they also mentioned that Smart Access Memory is now enabled for Ryzen 3000 desktop processors, except :

  • AMD Ryzen 5 3400G
  • AMD Ryzen 3 3200G

This would give those older processors a small but FREE boost in performance, when paired with Radeon RX 6000 series graphics cards and AMD 500 series motherboards.

To enable Smart Access Memory for your Ryzen 3000 / 5000 series PC, please follow the steps! 

Unfortunately, AMD has not enabled Smart Access Memory for Radeon RX 5000 series graphics cards, or AMD 400 series motherboards yet.

Recommended : AMD Smart Access Memory (Resizable BAR) Guide

 

Smart Access Memory : How Does It Boost Ryzen 3000 Performance?

Smart Access Memory is AMD’s marketing term for their implementation of the PCI Express Resizable BAR (Base Address Registers) capability.

What does that mean exactly?

CPUs are traditionally limited to a 256 MB I/O memory address region for the GPU frame buffer. This of it as an “data dump” for stuff like textures, shaders and geometry.

Since this “data dump” is limited to 256 MB, the CPU can only send texture, shader and geometry data as and when the GPU requires them.

This introduces some latency – delay from when the GPU requires the data, and the CPU send them.

Turning on Resizable BAR or Smart Access Memory greatly expands the size of that data dump, letting the CPU directly access the GPU’s entire frame buffer memory.

Instead of transferring data when requested by the GPU, the CPU processes and stores the data directly in the graphics memory.

Graphics assets can be transferred to graphics memory in full, instead of in pieces. In addition, multiple transfers can occur simultaneously, instead of being queued up.

While this AMD graphic above suggests that Smart Access Memory will widen the memory path (and thus memory bandwidth) between the CPU and GPU, that is not true.

Smart Access Memory / Resizable BAR will not increase memory bandwidth.

What it does is let the CPU directly access the entire GPU frame buffer memory, instead of using the usual 256 MB “dump”. That reduces latency because the graphics assets are now accessible by the GPU at all times.

 

Smart Access Memory For Ryzen 3000 : Requirements

This is what you currently require to enable AMD Smart Access Memory for Ryzen 3000 desktop processors :

Hardware

Software

  • AMD Radeon Software Driver 20.11.2 or newer
  • Latest Motherboard BIOS (AMD AGESA 1.1.0.0 or newer)

AMD currently recommends these X570 motherboards, because they have updated BIOS available :

 

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AMD Radeon RX 6700 XT : What You Need To Know!

The AMD Radeon RX 6700 XT is here, and it only costs $479… if you can find one!

Here is what you need to know about the new 1440p gaming card from AMD!

 

AMD Radeon RX 6700 XT : Official Launch Briefing!

AMD is targeting the Radeon RX 6700 XT at 1440p gamers, with its 40 enhanced Compute Units and 12 GB GDDR6 memory.

Let’s start with the official launch briefing by Scott Herkelman, Corporate Vice President & General Manager at the AMD Graphics Business Unit.

 

AMD Radeon RX 6700 XT : Key Features

The AMD Radeon RX 6000 series graphics cards are built on the new RDNA 2 architecture, which features an enhanced Compute Unit, a new visual pipeline with Ray Accelerators, and the new AMD Infinity Cache.

Recommended : AMD RDNA 2 Architecture : Tech Highlights!

AMD Smart Access Memory

This is an exclusive feature that is enabled when a Radeon RX 6000 series graphics card is paired with the Ryzen 5000 series processor and an X570 motherboard.

The Ryzen 5000 processor is given greater access to its GDDR6 graphics memory, providing up to 13% better performance when combined with the new Rage Mode one-click overclocking setting.

Recommended : AMD Smart Access Memory (PCIe Resizable BAR) Guide

AMD Infinity Cache

The AMD Radeon RX 6700 XT comes with a 96 MB Infinity Cache. Think of it as an L3 cache for the GPU.

AMD added it to dramatically increase memory bandwidth, which reducing memory latency and power consumption.

They claim it delivers up to 3.25X the bandwidth of the 256-bit GDDR6 memory, and up to 2.4X more effective bandwidth per watt.

Recommended : AMD Infinity Cache Explained : L3 Cache Comes To The GPU!

DirectX 12 Ultimate Support

They will support the next-generation games with greater realism through DirectX Raytracing (DXR) and Variable Rate Shading.

New Ray Accelerator

Every RDNA 2 computer unit has a new fixed-function Ray Accelerator engine to deliver real-time lighting, shadow and refection realism through DirectX Raytracing (DXR).

It can be paired with AMD FidelityFX to enable hybrid rendering, offering a combination of rasterised and ray-traced effects for a blend of better image quality and higher performance.

Variable Rate Shading (VRS)

Variable Rate Shading dynamically reduces the shading rate for areas of the frame that do not require a high level of visual quality, improving performance at little to no perceptible loss in image quality.

Microsoft DirectStorage Support

They will support the future DirectStorage API for faster load times, and high-quality textures.

 

AMD Radeon RX 6700 XT : Specifications

The AMD Radeon RX 6700 XT headlines the Radeon RX 6000 series :

  • Radeon RX 6900 XT : 80 CUs, 80 RAs, 320 TMUs, 128 ROPs, 16 GB DDR6
  • Radeon RX 6800 XT : 72 CUs, 72 RAs, 288 TMUs, 128 ROPs, 16 GB DDR6
  • Radeon RX 6800 : 60 CUs, 60 RAs, 240 TMUs, 96 ROPs, 16 GB DDR6
  • Radeon RX 6700 XT : 40 CUs, 40 RAs, 192 TMUs, 64 ROPs, 12 GB DDR6

Here is a table comparing their key specifications :

Specifications RX
6900 XT
RX
6800 XT
RX
6800
RX 6700
XT
Transistors 26.8 billion NA
Fab Process 7 nm
TGP 300 W 250 W 230 W
Compute Units 80 72 60 40
Ray Accelerators 80 72 60 40
Stream Processors 5120 4608 3840 2560
Game Clock 2015 MHz 2015 MHz 1815 MHz 2424 MHz
Boost Clock 2250 MHz 2250 MHz 2105 MHz 2581 MHz
TFLOPS 23.04 20.74 16.17 13.21
TMUs 320 288 240 192
Max. Texture Rate 720 GT/s 648 GT/s 505 GT/s 495 GT/s
ROPs 128 96 64
Max. Pixel Rate 288 GP/s 202 GP/s 165 GP/s
Infinity Cache 128 MB
Graphics
Memory
16 GB GDDR6 12 GB GDDR6
Bus Width 256-bit 192-bit
Bandwidth 512 GB/s 384 GB/s
PCIe Interface PCIe 4.0 x16
PCIe Power 2 x 8-pin

 

AMD Radeon RX 6700 XT : Performance

AMD shared these performance charts to demonstrate its gaming performance at the 1440p resolution, beating the NVIDIA GeForce RTX 3060 Ti.

 

AMD Radeon RX 6700 XT : Price + Availability

At launch, the AMD Radeon RX 6700 XT has a SEP (Suggested E-tail Price) of US$479, which is approximately £343 / A$614 / S$638 / RM1,940.

The AMD Radeon RX 6700 XT will be available from AMD board partners like ASRock, ASUS, GIGABYTE, MSI, PowerColor, Sapphire and XFX starting 18 March 2021.

 

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