5700 XT to Arc B580

[RaceT3ch]

Hey guys, I have a 5700 XT and the new Arc B580 interests me. Is still being on PCIE 3.0 an issue? I have an X370 board from when Ryzen began. I don't want to get a new motherboard on a dead platform if that means I could get a 7700 XT for a similar price. The Arc interests me because it has the AV1 encoding, claims to be about 3070 level of performance (while costing 400 while people still sell used 3070's for 500+) and has 12GB of VRAM. However like I said, I'm concerned about being on PCIE 3.0, drivers being worse than my current AMD GPU (eg refuse to open when I click on them), and the fact that I'm somewhat early adopting Arc.

 

[pavle]

This new Arc is surely going to be interesting. You can calculate the PCIe 3.0 8x bandwidth (that the card is going to be limited to on your MB) - it's one half of PCIe 4.0 8x, i.e. 8GB/s.

 

[sam_86314]

I'd think that as long as you can enable ReBAR, you'll be fine. I'm currently running my A380 (obviously a lower-tier card) in a PCIe 3.0 4x slot with ReBAR enabled, and it performs fine.

I previously had it in a Haswell system (no ReBAR) with a PCIe 3.0 16x slot, and it also performed just fine.

Of course, it remains to be seen how dependent Battlemage will be on PCIe 4.0 and/or ReBAR.

 

[Macro Device]

I'm concerned about being on PCIE 3.0

Don't be. Performance losses are abysmal, especially if your CPU is in fact a 5600. You're gonna be CPU limited more than anything else.

 

[arbiter]

pci 3.0 8x shouldn't show any noticeable impact in performance on a RTX4090 its only 6%.

NVIDIA GeForce RTX 4090 PCI-Express Scaling

The new NVIDIA GeForce RTX 4090 is a graphics card powerhouse, but what happens when you run it on a PCI-Express 4.0 x8 bus? In our mini-review we've also tested various PCI-Express 3.0, 2.0 and 1.1 configs to get a feel for how FPS scales with bandwidth.

www.techpowerup.com

 

[RaceT3ch]

I'd think that as long as you can enable ReBAR, you'll be fine. I'm currently running my A380 (obviously a lower-tier card) in a PCIe 3.0 4x slot with ReBAR enabled, and it performs fine.

I previously had it in a Haswell system (no ReBAR) with a PCIe 3.0 16x slot, and it also performed just fine.

Of course, it remains to be seen how dependent Battlemage will be on PCIe 4.0 and/or ReBAR.

Can I ask how the drivers are currently on the A380?

 

[sam_86314]

Can I ask how the drivers are currently on the A380?

They seem fine overall. I honestly haven't used the card all that much.

The only reproducible issue I've had is being unable to complete a run of the Final Fantasy 15 benchmark (always crashing about halfway through).

 

[RaceT3ch]

They seem fine overall. I honestly haven't used the card all that much.

The only reproducible issue I've had is being unable to complete a run of the Final Fantasy 15 benchmark (always crashing about halfway through).

What about DX 9 games?
I have some old games like TDU and Colin Mcrae Dirt but they have heavy mods

 

[LabRat 891]

So long as you have full ReBAR support, should be okay.
8lane cards like the rx 6600 do not see *nearly* the performance penalty in a 'gen back' slot, that 4lane cards like the rx 6500 do.
There's still some penalty, but it's not NEARLY as bad.

Make sure mobo is on latest avail BIOS/firmware, and you should be golden.

BTW, A 5700X3D would be a worthwhile upgrade, if a whole new AM5 system isn't on the horizon.

 

[umeng2002]

You will get half the bandwidth out of the B580 because it's a 8 lane interface. Not 16 lanes. So you will get 8 PCIe lanes at 3.0 speeds, not 16 lanes at 3.0 speeds equaling 8 lanes at 4.0 speeds. How much that affects performance, who knows until it's out?

 

[Solaris17]

The only reproducible issue I've had is being unable to complete a run of the Final Fantasy 15 benchmark (always crashing about halfway through).

Weird mine do. 380 and 310 albeit slow. I imagine my a40 and a770 would too

 

[RaceT3ch]

BTW, A 5700X3D would be a worthwhile upgrade, if a whole new AM5 system isn't on the horizon.

No thank you, 5700X3D is too expensive to justify the price still.
It would have to be 200 AUD to consider it.

 

[sam_86314]

What about DX 9 games?
I have some old games like TDU and Colin Mcrae Dirt but they have heavy mods

I generally use tools like DXVK when running DX9 games.

I just tried Saints Row 2 (a notoriously godawful PC port) on my A380, and with the normal suite of performance and bug-fixing mods (and DXVK), it runs great at max settings and 1080p.

 

[LabRat 891]

No thank you, 5700X3D is too expensive to justify the price still.
It would have to be 200 AUD to consider it.

They were/are around $179 USD. I understand HW prices are nuts in Aus, tho.

 

[Pumper]

They were/are around $179 USD. I understand HW prices are nuts in Aus, tho.

Nuts in what way? 1USD is 1.57 AUD, so $180 CPU normal price in Australia should be close to $300, even without any taxes on top.

 

[RaceT3ch]

Nuts in what way? 1USD is 1.57 AUD, so $180 CPU normal price in Australia should be close to $300, even without any taxes on top.

Cheapest here is 350 AUD. Normally hardware prices are crazier with Nvidia cards, always about 100-200USD more than USA
Considering that the 5600/X is already about 70-80% of the way of 58/5700X3D I'm happy with it. Also, the 5700 XT is already reaching the 240fps on comp games and 60fps on high quality games, I'm only getting the Arc because I want to set my settings to high not medium at the same FPS and not hear a whiny demon at the same time (And not miss out on new features like mesh shaders or even try out RT).

 

[RaceT3ch]

Reviews just dropped, and it performs like a 6700 XT except it has all the features.
I'll see if I can get it for Christmas

 

[Macro Device]

Unless your 5700 XT gives you a real headache I'd rather skip this GPU and get the best Battlemage one later on instead. I "upgraded" from 1080 Ti to 6700 XT and it was like "yeah it's now 30 FPS instead of 23 totally worth it lmao."

5700 XT to B580 is the same story basically.

 

[Zach_01]

Unless your 5700 XT gives you a real headache I'd rather skip this GPU and get the best Battlemage one later on instead. I "upgraded" from 1080 Ti to 6700 XT and it was like "yeah it's now 30 FPS instead of 23 totally worth it lmao."

5700 XT to B580 is the same story basically.

Not exactly...

5700XT is between 6600 and 6600XT
B580 is right above the 6700XT about on par with 6750XT
Thats +35-45% increase depending the resolution. Its definitely not the same story.

Though I would wait for higher ArcB cards to see what can be delivered.



Acceptable 1440p (raster) performance (for slow paced games)

 

[Macro Device]

Thats +35-45% increase depending the resolution.

Just maybe a five percent larger margin. What a whopping difference!

What I'm saying is this quote-unquote upgrade is not even +50% performance. Way less. Only worth it if you didn't even put an effort.