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PCIE 4.0 backwards compatible to 3.0?

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I am planning to buy a PCIE 4.0 GPU and wanted to know was it backwards compatible to 3.0?

My motherboard
Manufacturer Hewlett-Packard
Model 1589 (CPU0)
Version 0.00
Chipset Vendor Intel
Chipset Model Ivy Bridge-E
Chipset Revision 04
Southbridge Vendor Intel
Southbridge Model C602
Southbridge Revision 05
 
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I am planning to buy a PCIE 4.0 GPU and wanted to know was it backwards compatible to 3.0?

My motherboard
Manufacturer Hewlett-Packard
Model 1589 (CPU0)
Version 0.00
Chipset Vendor Intel
Chipset Model Ivy Bridge-E
Chipset Revision 04
Southbridge Vendor Intel
Southbridge Model C602
Southbridge Revision 05
Yes it is.
 
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Video Card(s) Radeon Pro W5500 GDDR5 8GB 128 bit
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I finally received my W5500's, ( i only ordered one lol, one came by mistake). GPU-Z info does not show up correctly with the Radeon Pro W5500

 

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I finally received my W5500's, ( i only ordered one lol, one came by mistake). GPU-Z info does not show up correctly with the Radeon Pro W5500

Don't you hate it when that happens?
 
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Nice to look at set of cards though.
 
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Yes indeed. And this card is faster than my RX 570 8GB, and Radeon Pro WX 7100.

LOL , he refunded me 400 bucks and didn't want the card back.
And don't you hate that even more?
 
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I have a theory, what do you see in advanced tab, there should be some reporting of base/game/boost clocks etc
Just general info
General
Driver Date 2020-03-30
DCH/UWD Driver Yes
Registry Path SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000
Device Location Bus 7, Device 0, Function 0
Power Limit +0%
Power Limit Adjustment Range -50% to +20%
ULPS N/A


But i went back to a older driver, its showing this now.


Contel panel
Graphics Card Manufacturer - Designed and built by AMD
Graphics Chipset - AMD Radeon Pro W5500
Device ID - 7341
Vendor ID - 1002
SubSystem ID - 0B0C
SubSystem Vendor ID - 1002
Revision ID - 00
Bus Type - PCI Express 4.0
Current Bus Settings - PCI Express 3.0 x8
BIOS Version - 017.002.000.000
BIOS Part Number - 113-D3250100-102
BIOS Date - 2019/12/30 22:19
Memory Size - 8176 MB
Memory Type - GDDR6
Memory Clock - 875 MHz
Core Clock - Not Available
Total Memory Bandwidth - 224 GByte/s
Memory Bit Rate - 14.00 Gbps
2D Driver File Path - /REGISTRY/MACHINE/SYSTEM/CurrentControlSet/Control/Class/{4d36e968-e325-11ce-bfc1-08002be10318}/0000
OpenGL® API Version - 4.6
OpenCL™ API Version - 2.0
 
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W1zzard

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Is that With the driver that shows 0 mhz on main tab? Because clocks show fine in your screenshot?
 
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20.8 drivers or latest enterprise drivers show this on the main screen. Just thought it would show the real information on general card section. I also check out GPU Caps Viewer , same thing. No big deal i guess, just thought you should know.
 
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It's still showing up as running on x8 mode instead of x16.
 
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It's still showing up as running on x8 mode instead of x16.
Card is only an 8x card it won't run more then that. The card is a 4.0 x8 card. Its Wired for 8x operation it can't run at 16x cause its not wired that way.
 
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Card is only an 8x card it won't run more then that. The card is a 4.0 x8 card. Its Wired for 8x operation it can't run at 16x cause its not wired that way.
That comment read like one of my essays where I'm just trying to fill the word count. You wrote one sentence (It's an x8 card, it cannot run x16) 3 times, and the last sentence even repeated the info twice :D

"Card is only an 8x card it won't run more then that. The card is a 4.0 x8 card. Its Wired for 8x operation it can't run at 16x cause its not wired that way. It's an x8 card so it will not be able to run x16, since it does not have the physical traces to run 16 lanes. The card only has 8 lanes available, and as such can be classified as 'x8', instead of the more common 'x16' lane count that standard GPUs of today have. The wires, or traces as they're known as, add up to 8, instead of 16. This is because it's only wired for x8 operation: meaning there are only a total of 8 traces on the card, instead of the more usual 16-based amount of wires more commonly seen in the graphics processing card market. The result of this is that it runs with 8 lanes, instead of the more common 16-lane configuration, which means the program will only report x8 operation, because there are only 8 traces, instead of 16." :laugh:
 
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