Leaked Radeon RX 5600 XT benchmarks reveal memory OC scaling

Leaked Radeon RX 5600 XT benchmarks reveals memory OC scaling

Leaked Radeon RX 5600 XT benchmarks reveal memory OC scaling

When AMD announced its Radeon RX 5600 XT, our initial thoughts were that this graphics card could be a strong overclocker, especially when it came to the GPU’s memory speeds. 

Today, new 3DMARK Fire Strike benchmark scores have been leaked, via _rogame, which reveals a correlation between the Radeon RX 5600 XT’s benchmark performance and memory overclocking, proving that the GPU is memory-limited in specific applications. 

What’s worth noting here is that these are 3DMARK Fire Strike scores; and that 3DMARK Fire Strike is an old benchmarking utility which runs at 1080p under DirectX 11. As 3DMARK Fire Strike is an older 1080p benchmark, memory bandwidth shouldn’t be a significant constraint on the Radeon RX 5600 XT’s performance, which means that higher resolutions, such as 1440p, could be more performance constrained by AMD’s chosen memory configuration. Newer games would also be more memory-constrained by the Radeon RX 5600 XT’s 12Gbps memory and 192-bit memory bus. 

When looking at the Radeon RX 5600 XT’s 3DMARK Fire Strike Graphics scores, we can see that using 14Gbps GDDR6 memory speeds yields a 6.72% boost in performance while using 14.4Gbps memory speeds delivers a 7.5% boost in graphics performance. These results come thanks to 16.7%, and 20% boosts to total memory bandwidth/clock speeds, respectively.     

  

Leaked Radeon RX 5600 XT benchmarks reveals memory OC scaling  (Image from _rogame)

 
Why is the Radeon RX 5600 XT memory limited? 

If the Radeon RX 5600 XT is memory limited, why isn’t AMD shipping the graphics card with faster GDDR6 memory modules? Wouldn’t that help AMD compete with Nvidia’s higher cost graphics cards? 

The simple answer to this question is pricing and product segmentation. Using faster GDDR6 memory would bring the Radeon RX 5600 XT closer to AMD’s Radeon RX 5700, making it a less appealing purchase. On top of that, higher-speed GDDR6 memory would add more cost to AMD’s budget-friendly Radeon RX 5600, a move which would bring the graphics card closer to the RX 5700 in terms of pricing and performance. It makes little financial sense for AMD to do that. 

Hopefully, Radeon RX 5600 XT users will be able to overclock their Radeon RX 5600 XT graphics cards to 14Gbps to regain some of this lost performance potential. However, this depends on the quality of the GDDR6 memory modules on your specific graphics card. Even so, memory overclocking may still be the first port of call for Radeon RX 5600 XT overclockers. 

  AMD Radeon RX 5500 XT AMD Radeon
RX 5600 XT 
AMD Radeon
RX 5700
AMD Radeon
RX 5700 XT
Process Tech/ Architecture 7nm Navi 7nm Navi 7nm Navi 7nm Navi
Stream 
Processors
1408 2304 2304 2560
Base Clock  1465MHz 1605MHz
Gaming Clock 1717MHz 1375MHz 1625MHz 1755MHz
Boost Clock 1845MHz 1560MHz 1725MHz 1905MHz
Memory 4/8GB GDDR6 6GB GDDR6 8GB GDDR6 8GB GDDR6
Memory Bus 128-bit 192-bit 256-bit 256-bit
Memory Clock 14Gbps 12Gbps 14Gbps 14Gbps
Memory 
Bandwidth
224GB/s 288GB/s 448GB/s 448GB/s
MSRP (US) $169 $279 $349 $399

Leaked Radeon RX 5600 XT benchmarks reveals memory OC scaling  

AMD’s Radeon RX 5600 XT is designed to surpass Nvidia’s GTX 1660 Ti graphics card, solidifying AMD’s hold on the sub-$300 GPU market. Hopefully, this graphics card’s pricing will translate well in the UK and Europe.

You can join the discussion on AMD’s RX 5600 XT and its memory scaling on the OC3D Forums.