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BTX Motherboard Specifications |
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BTX vs ATX
BTX Support Retension
Module (SMR)
BTX Motherboard
specifications
Front Panel and Motherboard connection
Slots and riser cards
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BTX vs ATX How to make the difference between a BTX and an ATX
board.
(Balanced Technology eXtended vs
Advanced Technology eXtended)
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BTX Board |
ATX board |
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-The I/O ports are on the
RIGHT
and PCI slots on the LEFT.
-All components are parallel
allowing a better air flow.
-The CPU is situated at the front
of the PC and at a 45degree angle which allows a better ventilation.
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-The I/O ports are on the
LEFT and PCI slots on the RIGHT.
-All components are NOT parallel
which disrupts the air flow.
-The CPU is situated somewhere
between the I/O ports and the Memory slots, away from an efficient air
flow..
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BTX Chassis |
ATX Chassis |
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-The ports are on the RIGHT and
PCI slots on the LEFT.
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-The ports are on the LEFT and
PCI slots on the RIGHT.
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BTX Tower
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ATX Tower
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BTX I/O shield |
ATX I/O shield |
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-The BTX I/O Shield measures: 40x170mm |
-The ATX I/O Shield measures: 45x160mm |
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BTX Support Retension
Module (SRM): |
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All
our BTX chassis, desktops & Towers, come with SRM (Support Retention Module
circled in red)
to support the CPU.
The SRM is not removable and is only suitable for the type of BTX Motherboard
described bellow. |
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BTX Motherboard
specifications:
You BTX board will fit our BTX chassis only if:
-the CPU is at a 45
degree angle
-the motherboard is a
Pico or Micro BTX form factor
Our BTX desktops can take a
board up to 264x267mm
Our BTX towers can take a
board up to 280x267mm
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BTX board drawing
This type of BTX
board bellow is compatible with any of our BTX chassis.
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Micro BTX
Motherboard size:
266 x 243mm with
up to 3 slots (Missing slot 1)
or 266 x 263mm
with up to 4 slots. |
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Compatible BTX board
This most common type of BTX board
bellow is compatible
with any of our BTX chassis. The CPU cooler screw holes form a 66x112mm RECTANGLE,
the CPU is at a
45degree angle and the
CPU is at 18 to 23mm from the edge. This board will fit our chassis SRM.
Incompatible BTX board
This type of BTX board bellow is NOT
compatible with any of our BTX chassis. Even though the CPU screw
holes form the correct 66x112mm rectangle, the CPU is too far away
from the edge of the board. Also, the CPU is
NOT at a 45degree angle. This board will NOT
fit our chassis SRM.
Incompatible BTX board
This type of BTX board bellow is NOT
compatible with any of our BTX chassis. The CPU cooler
screw holes form a 69x69mm SQUARE
and the CPU is
NOT at a 45degree angle. The CPU is
also too far from the edge of the board. This board will NOT
fit our chassis SRM.
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Front Panel and Motherboard connection:
Our
BTX chassis have a front panel with standard motherboard connections
(Switches, LEDs, USB & Audio ports). This means that your BTX board must
have the standard connectors pictured bellow.
However, some BTX systems such as Dell Optiplex and others, have a NON
standard connection between the front panel and the board.
This
may make the transfer of components from an old BTX system to our BTX
chassis difficult. See picture bellow.
In
order to get round this problem, the front USB & Audio ports could be
replaced by a "Front USB & Audio kit" (see
item no 9 here >>), The LEDs and Reset switch could be ignored, but the
On/Off switch would need to be connected to the correct pins on the board. |
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Slots and riser cards: |
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- Up to 3 Low
Profile (Short) cards can be plugged into slots 1, 2 & 3 on
the Motherboard. |
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Example of Low
Profile card
suitable for slots
A,B & C. |
Example of
Standard PCI Card
only
suitable for slot D (with riser card) |
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- A
Standard size
32bit PCI Card can be used in horizontal slot D in
conjunction with the optional Flexible 32bit PCI
Riser Card plugged into slot 1,2,3 or 4 on the motherboard. |
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Optional
Flexible 32bit
PCI Riser card |
Flexible 32bit PCI Riser Card can be plugged in any slot on
the motherboard. |
Standard 32bit PCI slot on motherboard |
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- A Standard size
PCI Express x16 Card can be used in horizontal slot D in
conjunction with the optional Rigid PCI Express
x16 Riser Card plugged into slot 4 on the motherboard. |
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Optional
PCI Express 16x Riser Card |
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 PCI Express x16
slot
on motherboard |
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 Riser card
inserted in
motherboard slot |
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Riser card secured by
the
top support bar. |
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