AMD publishes an Effective Memory Bandwidth of up to 2708 GB/s for this card. That is a blended figure that assumes Infinity Cache hits and it includes traffic across the external interface, so it is not comparable with the near-memory bandwidth figures this site records for on-die SRAM parts and is deliberately kept out of the bandwidth columns. The interface figure is 624 GB/s.

AMD Radeon RX 7800 XT 16GB

RDNA 3 PCIe 2023 5nm Spec confidence: Official
FP32
37
TFLOPS
VRAM
16 GB
GDDR6
Bandwidth
624 GB/s
memory
TDP
263 W
141.8 TFLOPS/kW
Download datasheet

Overview

The Radeon RX 7800 XT is the 60 compute unit Navi 32 card, and the cheapest 16 GB RDNA 3 board AMD shipped. It runs at up to 2430 MHz for 37.3 TFLOPS of FP32 vector and 74.6 TFLOPS of FP16 matrix through 120 AI accelerators, with 16 GB of GDDR6 on a 256-bit bus at 624 GB/s and 64 MB of Infinity Cache. Board power is 263 W over two 8-pin connectors in a 267 mm, 2.5-slot card. For local inference the 16 GB frame buffer is the reason to look at it, but note that RDNA 3 has no FP8 path and no structured sparsity, so its ceiling is the 74.6 TFLOPS FP16 matrix figure.

Performance

Peak theoretical throughput by precision type

PrecisionPeak
FP64
No verified data available
FP32
32-bit floating point
37TFLOPS
TF32
No verified data available
BF16
No verified data available
FP16
16-bit floating point
75TFLOPS
FP8
No verified data available
FP6
No verified data available
FP4
No verified data available
INT8
8-bit integer
75TOPS
INT4
4-bit integer
149TOPS

Every figure here is dense. The vendor documents no structured (2:4) sparsity mode for this part, so there is no second number to quote.

The Radeon RX 7800 XT 16GB in the GPU landscape

Peak FP16 TFLOPS (dense) against TDP, single-GPU parts tracked by Flopper

06001,2001,8002,4003,0000 W250 W500 W750 W1000 W1250 W1500 WInstinct MI355XRadeon RX 7800 XT 16GB

Higher and further left is better: more half-precision throughput for less power.

Specifications

Architecture

RDNA 3

Form Factor

PCIe

Launch Year

2023

Process Node

5nm

Memory

16 GB GDDR6

Bandwidth

624 GB/s

TDP

263 W

Max Power

263 W

Transistors

28.1 billion

Stream Processors

3,840

Spec Confidence

Official

Full Specifications

Compute Engine
Stream Processors 3,840
Tensor Cores 120 (RDNA 3)
Compute Units 60
Boost Clock 2.43 GHz
Chip Design
Transistors 28.1 billion
Process Node 5nm
Memory
VRAM 16 GB
Memory Type GDDR6
Bandwidth 624 GB/s
Interface Width 256-bit
Memory Clock 19.5 GT/s
Interconnect & I/O
PCIe Gen 4 x16
Cache
Infinity Cache 64 MB
Power & Thermal
TDP 263 W
Max Board Power 263 W
Power Connector 2x8-Pin
Enterprise Features
Sparsity No
Physical & Media
Card Length 267 mm
Width 2.5-slot
General
Form Factor PCIe
Architecture RDNA 3
Process Node 5nm
Launch Year 2023

Datasheet & Resources

Data Provenance

Every figure traced to a source

Primary Source

Publisher
AMD
Published
2023-08-25

Data Quality

Spec confidence
Official
Clock basis
Boost
Core precisions with figures
3 of 9
Normalization
All values in TFLOPS

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Frequently Asked Questions

How many TFLOPS does the AMD Radeon RX 7800 XT have?

The AMD Radeon RX 7800 XT delivers 37 TFLOPS FP32 and 75 TFLOPS FP16 at peak. Flopper does not currently have a verified FP8 throughput figure for it.

What is the power consumption of the AMD Radeon RX 7800 XT?

The AMD Radeon RX 7800 XT has a TDP (Thermal Design Power) rating of 263 watts.

How much memory does the AMD Radeon RX 7800 XT have?

The AMD Radeon RX 7800 XT is equipped with 16 GB of VRAM with 624 GB/s of memory bandwidth.

What architecture is the AMD Radeon RX 7800 XT based on?

The AMD Radeon RX 7800 XT is based on the RDNA 3 architecture, launched in 2023.

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