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PC Graphics

ccbadd
Journeyman III

Two W6800s show different amount of VRAM

I have 2 Radeon Pro W6800's that appear to work fine. The problem is one shows to have 31.98GB of VRAM and the other only 29.98GB? They are both in the same machine, AMD 7950X with 96GB ram running Win 11 Pro 22H2. Here is the partial output of hipinfo just to prove it:

--------------------------------------------------------------------------------

device# 0

Name: AMD Radeon PRO W6800

pciBusID: 7

pciDeviceID: 0

pciDomainID: 0

multiProcessorCount: 30

maxThreadsPerMultiProcessor: 2048

isMultiGpuBoard: 0

clockRate: 1575 Mhz

memoryClockRate: 1000 Mhz

memoryBusWidth: 0

totalGlobalMem: 29.98 GB

totalConstMem: 2147483647

l2CacheSize: 4194304

gcnArchName: gfx1030

peers:

non-peers: device#0 device#1

memInfo.total: 29.98 GB

memInfo.free: 29.86 GB (100%)

--------------------------------------------------------------------------------

device# 1

Name: AMD Radeon PRO W6800

pciBusID: 3

pciDeviceID: 0

pciDomainID: 0

multiProcessorCount: 30

maxThreadsPerMultiProcessor: 2048

isMultiGpuBoard: 0

clockRate: 1575 Mhz

memoryClockRate: 1000 Mhz

memoryBusWidth: 0

totalGlobalMem: 31.98 GB

totalConstMem: 2147483647

l2CacheSize: 4194304

gcnArchName: gfx1030

peers:

non-peers: device#0 device#1

memInfo.total: 31.98 GB

memInfo.free: 31.86 GB (100%)

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