Intel System Board G4H875-B - Manual (Page 9)

1
Introduction
9
Performance Acceleration Technology (PAT)
PAT mode is supported only when the system uses DDR400 with
800MHz FSB CPU. PAT performs data transactions directly from the
CPU to the system memor y, bypassing the normal path of
operation. This reduces the MCH timing therefore providing
improved system performance.
Expansion Slots
• 1 AGP slot
• 4 PCI slots
• 1 PCI-X 64-bit/66MHz slot
AGP (Accelerated Graphics Port)
• Supports AGP 3.0 (AGP 4x and 8x) and AGP 2.0 (AGP 1x and
4x) spec.
• Supports 1.5V AGP 8x (2.13GB/sec.) and AGP 4x (1066MB/
sec.) add-in cards.
AGP is an interface designed to support high performance 3D
graphics cards for 3D graphics applications. It handles large
amounts of graphics data with the following features:
• Pipelined memory read and write operations that hide
memory access latency.
• Demultiplexing of address and data on the bus for nearly
100 percent efficiency.
Note:
AGP 2x and 3.3V AGP cards
are not supported.
Density Width
Single/Double
184-pin DDR
Density 128 Mbit
X8
SS/DS
128/256MB
X16
SS/DS
64MB/NA
256 Mbit
X8
SS/DS
256/512MB
X16
SS/DS
128MB/NA
512 Mbit
X8
SS/DS
512/1024MB
X16
SS/DS
256MB/NA