Tuesday, June 25th 2019

UL Releases PCI Express Feature Test For 3DMark Ahead of PCIe 4.0 Hardware

With PCI-Express 4.0 graphics cards and motherboards soon to arrive, UL has released their PCI Express feature test for 3DMark. This latest addition has been designed to verify the bandwidth available to the GPU over a computer's PCI Express interface. To accomplish this, the test will make bandwidth the limiting factor for performance and does so by uploading a large amount of vertex and texture data to the GPU for each frame. The end goal is to transfer enough data over the PCIe 4.0 interface to thoroughly saturate it. Once the test is complete, the end result will be a look at the average bandwidth achieved during the test.
While real-life gaming performance is unlikely to be limited by PCIe bandwidth, the test does provide a repeatable and reliable way to measure PCIe bandwidth across generations and thereby the performance of different hardware configurations. The PCI Express feature test is available now in 3DMark Advanced Edition and 3DMark Professional Edition and is compatible with any system that has a Direct X 12 compatible discrete graphics card. The test will not run on systems using integrated graphics, and on multi-GPU systems, only the primary GPU will be tested. External GPU enclosures are not supported either.

Source: UL
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20 Comments on UL Releases PCI Express Feature Test For 3DMark Ahead of PCIe 4.0 Hardware

#1
Wavetrex
Not sure how much PCI-e bandwidth this test needs, but it could certainly use more Youtube video bandwidth !
Horrible encoding is horrible.
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#2
Basard
What is it supposed to be? Couldn't they have made it look like grass or something?
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#3
Steevo
Fairly certain W1zz has proven that by the time bandwidth is an issue the card will be obsolete. Multiple times.

Perhaps it might reveal weakness in other components that could cause stuttering
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#4
rutra80
It's scaled to do 1 FPS per 1GB/s of bandwidth.
It starts with fewer big polys and then goes up, on my gen 3 PCIe it looks quite nice at the end, on gen 4 it should be quite convincing field of grain :)
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#5
Basard
rutra80, post: 4070084, member: 187483"
It's scaled to do 1 FPS per 1GB/s of bandwidth.
It starts with fewer big polys and then goes up, on my gen 3 PCIe it looks quite nice at the end, on gen 4 it should be quite convincing field of grain :)
A field of grain floating on a turbulent ocean?
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#6
Jism
We should have some more PCI-E related, benchmark tools. Because there's enough gains to be scored when oc'ing the PCI-E bus. GPU-Z for example reports the Bus width / link width but not the actual bandwidth. If we OC the bus to 110Mhz that should increase the bandwidth alot more then running on stock?

I know oc'ing the PCI-E bus helps the videocard but can cause issues for the NIC, S-ata controller and what more. But we've done it in the past to sqeeze a few more FPS out of a OC contest.
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#7
Crackong
I/O , Storage , Connectivity , those are the PCI-E 4.0 capabilities we want to see.

Modern graphics cards are proven to be effective enough to run on 3.0x8 with single digit performance loss.
The only "4.0 beats 3.0" scenario is external display card, but it is a very niche market .
Please stop doing these stupid PCI-E 4.0 graphics benchmarks.
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#8
TheLostSwede
Crackong, post: 4070160, member: 185495"
I/O , Storage , Connectivity , those are the PCI-E 4.0 capabilities we want to see.

Modern graphics cards are proven to be effective enough to run on 3.0x8 with single digit performance loss.
The only "4.0 beats 3.0" scenario is external display card, but it is a very niche market .
Please stop doing these stupid PCI-E 4.0 graphics benchmarks.
Please stop voicing your stupid opinions? It's a test for crying out loud, it's been designed to show that there's a difference for the sake of having a test to show there's a difference. People love showing off the fact that they have fast hardware. What's so wrong with that? Yes, it might be a mostly pointless test, but stupid..?
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#9
EarthDog
Pcie 4.0 vs 3.0 today... like hooking up a fire hose to your garden spicket.
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#10
Crackong
TheLostSwede, post: 4070166, member: 3382"
Please stop voicing your stupid opinions? It's a test for crying out loud, it's been designed to show that there's a difference for the sake of having a test to show there's a difference. People love showing off the fact that they have fast hardware. What's so wrong with that? Yes, it might be a mostly pointless test, but stupid..?
There is no point of creating a benchmark with fancy visuals to test bandwidth.
Something looked like a AIDA64 memory test would be fancy enough for a bandwidth test.
And I have to remind you, this test isn't a PCI-E test because it needs a GPU to operate.
For example you cannot test your fancy PCI-E 4.0 x4 m.2 slot with it.
You can call it a "GPU data rate test" but PCI-E ? Hell NO.

It is a pointless test at the beginning and calling it a PCI-E bandwidth test is utterly stupid.
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#11
Hotobu
Steevo, post: 4070083, member: 19251"
Fairly certain W1zz has proven that by the time bandwidth is an issue the card will be obsolete. Multiple times.
Can you provide links to this please? I've been trying to find this out.
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#12
TheLostSwede
Crackong, post: 4070171, member: 185495"
There is no point of creating a benchmark with fancy visuals to test bandwidth.
Something looked like a AIDA64 memory test would be fancy enough for a bandwidth test.
And I have to remind you, this test isn't a PCI-E test because it needs a GPU to operate.
For example you cannot test your fancy PCI-E 4.0 x4 m.2 slot with it.
You can call it a "GPU data rate test" but PCI-E ? Hell NO.

It is a pointless test at the beginning and calling it a PCI-E bandwidth test is utterly stupid.
Of course there is, maybe not as an actual test, but you know as well as I do, that companies like to show things off in a visual way, as does overclockers and people that like benching. It might not server an actual purpose for the test itself, but it serves a purpose, even though you might not find it useful.

Hotobu, post: 4070179, member: 96511"
Can you provide links to this please? I've been trying to find this out.
Most recent one here https://www.techpowerup.com/review/nvidia-geforce-rtx-2080-ti-pci-express-scaling/
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#13
theoneandonlymrk
Anyone tried this on an actual pciex slot yet at home, surely someone has a Intel server pciex4 test to show?.
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#14
INSTG8R
My Custom Title
Well I gave it a go. It was weird and I didn’t let it finish. But it’s was like 5FPS and my card was just idle during the test 5.9GBs was the highest I saw before I quit.
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#15
TheLostSwede
INSTG8R, post: 4070321, member: 4203"
Well I gave it a go. It was weird and I didn’t let it finish. But it’s was like 5FPS and my card was just idle during the test 5.9GBs was the highest I saw before I quit.
You running your card in x8 mode?
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#16
INSTG8R
My Custom Title
TheLostSwede, post: 4070368, member: 3382"
You running your card in x8 mode?
Actually funny that, since moving from Fury to Vega my slot runs full speed at all times...
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#20
srsbsns
14.5 on Crosshair VII with a Radeon Vii
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