MSI B450-A PRO User Manual - Page 29

PCI_E1~6: PCIe Expansion Slots, PCIe bandwidth of Multiple graphics cards

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PCI_E1~6: PCIe Expansion Slots PCI_E1: PCIe 3.0 x16*/ PCIe 3.0 x8** PCI_E2: PCIe 2.0 x1 PCI_E3: PCIe 2.0 x1 PCI_E4: PCIe 2.0 x4 PCI_E5: PCIe 2.0 x1 PCI_E6: PCIe 2.0 x1 * For Ryzen™ 1st and 2nd Generation processors ** For Ryzen™ with Radeon Vega Graphics processors BAT1 Important y If you install a large and heavy graphics card, you need to use a tool such as MSI Gaming Series Graphics Card Bolster to support its weight to prevent deformation of the slot. y For a single PCIe x16 expansion card installation with optimum performance, using the PCI_E1 slot is recommended. y When adding or removing expansion cards, always turn off the power supply and unplug the power supply power cable from the power outlet. Read the expansion card's documentation to check for any necessary additional hardware or software changes. y PCI_E4 will run x1 speed when installing devices in PCI_E2/ PCI_E3/ PCI_E5 slot. PCIe bandwidth of Multiple graphics cards Slot Single 2-Way 3.0 x16*/1 3.0 x16*/1 PCI_E1 (CPU) or or 3.0 x8*/2 3.0 x8*/2 PCI_E2 (PCH) 2.0 x1 2.0 x1 Empty Empty ― PCI_E3 (PCH) 2.0 x1 Empty 2.0 x1 Empty ― PCI_E4 (PCH) 2.0 x1 2.0 x1 2.0 x1 2.0 x1 2.0 x4* PCI_E5 (PCH) 2.0 x1 Empty Empty 2.0 x1 ― PCI_E6 (PCH) 2.0 x1 2.0x1 M2_1 (CPU) 3.0 x4 3.0 x4 (─: unavailable, *: graphics card, 1: for Ryzen™ 1st and 2nd Generation processors, 2: for Ryzen™ with Radeon Vega Graphics processors) Overview of Components 29

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29
Overview of Components
BAT1
PCI_E1~6: PCIe Expansion Slots
PCI_E1
: PCIe 3.0 x16*/ PCIe 3.0 x8**
PCI_E2
: PCIe 2.0 x1
PCI_E3
: PCIe 2.0 x1
PCI_E4
: PCIe 2.0 x4
PCI_E5
: PCIe 2.0 x1
PCI_E6
: PCIe 2.0 x1
Important
y
If you install a large and heavy graphics card, you need to use a tool such as
MSI
Gaming Series Graphics Card Bolster
to support its weight to prevent deformation of
the slot.
y
For a single PCIe x16 expansion card installation with optimum performance, using
the
PCI_E1
slot is recommended.
y
When adding or removing expansion cards, always turn off the power supply and
unplug the power supply power cable from the power outlet. Read the expansion
card
’
s documentation to check for any necessary additional hardware or software
changes.
y
PCI_E4 will run x1 speed when installing devices in PCI_E2/ PCI_E3/ PCI_E5 slot.
* For Ryzen™ 1st and 2nd Generation processors
** For Ryzen™ with Radeon Vega Graphics processors
PCIe bandwidth of Multiple graphics cards
Slot
Single
2-Way
PCI_E1 (CPU)
3.0 x16*
/1
or
3.0 x8*
/2
3.0 x16*
/1
or
3.0 x8*
/2
PCI_E2 (PCH)
2.0 x1
2.0 x1
Empty
Empty
―
PCI_E3 (PCH)
2.0 x1
Empty
2.0 x1
Empty
―
PCI_E4 (PCH)
2.0 x1
2.0 x1
2.0 x1
2.0 x1
2.0 x4*
PCI_E5 (PCH)
2.0 x1
Empty
Empty
2.0 x1
―
PCI_E6 (PCH)
2.0 x1
2.0x1
M2_1 (CPU)
3.0 x4
3.0 x4
(
─
: unavailable, *: graphics card,
1
: for Ryzen™ 1st and 2nd Generation processors,
2
: for Ryzen™ with Radeon Vega Graphics processors)