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Author Topic: B350 TOMAHAWK SLI Compatibility  (Read 8118 times)

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herman.sauerTopic starter

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B350 TOMAHAWK SLI Compatibility
« on: 04-April-17, 09:22:51 »

Good day guys,

Just want to know, I have an MSI B350 Tomahawk and I am not sure if it can run Nvidia cards in SLI. I know that it is definitely Crossfire ready, but nothing is said on the website about SLI. 
Any advice will be greatly appreciated. 
Thanks!
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Svet

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Re: B350 TOMAHAWK SLI Compatibility
« Reply #1 on: 04-April-17, 11:15:11 »

topic unlocked {
you should not lock your topic if you are expecting a replies
}

it don't support SLI
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flobelix

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Re: B350 TOMAHAWK SLI Compatibility
« Reply #2 on: 04-April-17, 11:31:03 »

Note that no B350 chipset board does support SLI as B350 can't share the 16 lanes 3.0 reserved for vgas between two slots. That would be required for an x8/x8 setup. Therefor the B350 Tomahawk can just offer the vga slot that is permanently at 16 PCI-E 3.0 lanes and a 2.0 slot with just 4 lanes. For SLI both slots for the vgas need to run at x8 minimum. Crossfire is allowed even at x4. Of course it would suck with 3.0 x16/2.0 x4 because the card in the 2.0 slot would be muach limited slowing down the primary card and causing massive micro stuttering. B350 is simply not meant for multi gpu setups. You will need an X370 chipset based board. The MSI X370 SLI Plus or Krait Gaming are not much more expensive than B350 Tomahawk and will support SLI if that is important for you.
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herman.sauerTopic starter

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Re: B350 TOMAHAWK SLI Compatibility
« Reply #3 on: 04-April-17, 12:44:11 »

Ohhh snap, okay thanks. I purchased the B350 thinking that it will support it as it had two PCIE ports. I did not know that there is problems like that which can bottle neck or even prevent it from working. so what you are basically saying, even crossfire is a very bad idea with this motherboard?
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Nichrome

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Re: B350 TOMAHAWK SLI Compatibility
« Reply #4 on: 04-April-17, 13:54:00 »

Crossfire is possible.
http://wccftech.com/amd-ryzen-am4-motherboard-round-up-msi-gigabyte-asrock-asus-x370/

Scroll down to AMD AM4 Chipset Features and Specifications:
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Svet

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Re: B350 TOMAHAWK SLI Compatibility
« Reply #5 on: 04-April-17, 14:15:44 »

Crossfire is possible.
http://wccftech.com/amd-ryzen-am4-motherboard-round-up-msi-gigabyte-asrock-asus-x370/

Scroll down to AMD AM4 Chipset Features and Specifications:

yes herman.sauer is aware of this
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herman.sauerTopic starter

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Re: B350 TOMAHAWK SLI Compatibility
« Reply #6 on: 04-April-17, 23:50:49 »

Do you maybe know of a benchmark where someone ran B350 with 2 x RX480s?
I want to see how much what you are saying will affect the performance of a crossfire setup
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Marked as best answer by herman.sauer on 05-April-17, 11:36:16

flobelix

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Re: B350 TOMAHAWK SLI Compatibility
« Reply #7 on: 05-April-17, 09:21:24 »

Benchmarks can't show that. The result is just average fps. That doesn't tell if game experience is smooth or not. If there are very high and very low frames in a game average result looks fine but it feels still laggy. 3.0 x16/2.0 x4 is a very bad idea. If you like you can try of course. Crossfire can still be enabled (that's all what Nichrome's link shows). Nvidia SLI disabled if not running x8/x8 at least is a rule with a reason for it.
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MSI X299 Gaming M7 ACK (MS-7A90) Bios 1.A0
Core i7 7820X @ 4404.45 MHz (44 * 100.1 MHz, fixed all cores), 1.158v - delidded and using der8auer Skylake-X Direct Die Frame
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32GB (4 x 8GB) Corsair CMR32GX4M4Z3200C16 @ 1602.9 MHz (DDR4-3206), 16-18-18-36-2t, 1.35v
MSI GeForce RTX 2080 Ti DUKE 11G OC
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herman.sauerTopic starter

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Re: B350 TOMAHAWK SLI Compatibility
« Reply #8 on: 05-April-17, 10:37:00 »

Thanks for all the help. I greatly appreciate it!
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flobelix

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Re: B350 TOMAHAWK SLI Compatibility
« Reply #9 on: 05-April-17, 10:38:59 »

:hat tip:  You are welcome.
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MSI X299 Gaming M7 ACK (MS-7A90) Bios 1.A0
Core i7 7820X @ 4404.45 MHz (44 * 100.1 MHz, fixed all cores), 1.158v - delidded and using der8auer Skylake-X Direct Die Frame
Corsair H110 Liquid CPU Cooler
32GB (4 x 8GB) Corsair CMR32GX4M4Z3200C16 @ 1602.9 MHz (DDR4-3206), 16-18-18-36-2t, 1.35v
MSI GeForce RTX 2080 Ti DUKE 11G OC
1TB Crucial MX500 M.2 SSD + 2TB Crucial MX500 SSD
Thermaltake Toughpower Grand RGB 1200W Platinum • +12V: 100A • +3.3V: 25A • +5V: 25A
Windows 10 Pro
MSI MAG BUNKER Case
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