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RX 5500 XT is Handicapped by PCIe 3.0! PCIe 4.0 Shows HUGE Improvement!

 
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Boot Sequence - RX 5500 XT is Handicapped by PCIe 3.0! PCIe 4.0 Shows HUGE Improvement!

RX 5500 XT is Handicapped by PCIe 3.0! PCIe 4.0 Shows HUGE Improvement! - Boot Sequence

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Boot Sequence
  • 2 days ago
Let’s get started with AMD. its been about a week since the new RX 5500 series fully launched and most of the reviews are out. And while they are accurate, they are not complete anymore.

It turns out that that the 5500 series performs dramatically better when used with an AMD x570 motherboard and a ryzen 3000 CPU. Why? PCI-E gen4. German website PCgamesHardware.de tested both the 4gb and 8gb cards on an Asus X570- plus Tuf gaming board with 16gb of 3200Mhz memory and a Ryzen 5 3600. Let’s take a look at the benchmarks.

Assassin's creed odyssey at 1080p shows a measurable difference for the 4gb version with PCI 3.0 at 25 FPS and PCIe 4.0 at 31fps average. The 8gb version of the card does also benefit from PCIe gen 4, but just not as much.

Moving to battlefield 5 and the difference is even more present with both the 4gb card and 8gb card getting a serious boost to frame rates with PCIe gen 4. Now the biggest difference observed for the 4gb card on PCIe gen 4 was with far cry new dawn boosting the frame rates from a kind of playable 42fps all the way up to 74.7. The 8gb model also has a tiny bit of improvement. They also tested it with shadow of the tomb raider, I’ll let that slide up for a bit so you can see the improvement, *pause* and also with Wolfenstein Youngblood which goes from unplayable for the 4gb card on PCIe 3.0, up to kind of playable with PCIe gen 4.

These differences in performance are due to AMD’s choice of limiting the card to 8 PCI express lanes, no matter what generation it is. Since the card is rated to run at PCIe gen 4 specs, the memory read and write speeds are effectively doubled when compared to PCIe gen 3 as seen in these 2 AIDA 64 gpgpu benchmarks. Essentially, when plugged on gen 4, the card runs at the equivalent of 16 lanes of gen 3. When plugged to gen 3, it caps out at 8 lanes of gen 3.

But why does memory transfer speeds matter ? well at 4gb, the rx 5500XT ‘s VRAM can get full quite easily, it then has to move some of this data off to the ram. The way it does this is through the PCIe bus… and that’s where the advantage of Gen 4 comes in. That’s also why the 4gb version gets a much bigger boost from gen 4 compared to the 8gb card.

The RX 5500 series is not the first card to be limited to 8 lanes, the rx 570 was too, but that card was far from powerful enough to take advantage of it. What do you guys think of all this? Let me know down below!


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TODAY'S DOSE OF TECH NEWS SOURCES
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RX 5500 Pci-e testing : https://bit.ly/2MeUGaQ
Video ( german ) : https://youtu.be/M7OcwZTsNP4
Rx 5600 XT : https://bit.ly/35LG2zH
Puma’s gaming shoes : https://bit.ly/35HD7Is
12 days of christmas games : https://bit.ly/2Q87TU1
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Snows and the rest of the Boot Sequence team are here to bring you the latest breaking Tech News. Featuring the latest tech, product launches, trends, rumors and more. Boot Sequence is your tech vlog to stay in the know.
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