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Gap pad, putty pad, and PCM identification and location

Follow the information in this section to identify shape, location, replacing scenarios, and instruction on the gap pad, putty pad, and PCM used in SC777 V4.

See the following for information of various gap pad, putty pad, and PCM used in SC777 V4:

Water loop putty pads and gap pads​

Figure 1. Water loop putty pads and gap pads

Table 1. Water loop putty pads and gap pads
Pad numberPad typeScenario requiring pad replacingPad attaching location
1Putty padReplace the putty pads whenever the water loop is removed.Water loop
2Gap padReplace the pads when damaged or missing.
3Gap pad (only for system installed with E3.S switch board)Replace the pads when damaged or missing.

GB200-NVL4 putty pad on plastic jig​

Figure 2. GB200-NVL4 putty pad on plastic jig

Table 2. GB200-NVL4 putty pad on plastic jig
Pad numberPad typeScenario requiring pad replacingPad attaching location
1Putty pad on plastic jigReplace the putty pads whenever the GPU cold plate is removed from the tray.On the GB200-NVL4 board

GB200-NVL4 PCM for MCIO Configuration​

Figure 3. GB200-NVL4 PCM for MCIO Configuration

Table 3. GB200-NVL4 PCM for MCIO Configuration
Pad numberPad typeScenario requiring pad replacingPad attaching location
1PCMReplace the PCM whenever the GPU cold plate is removed from the tray.On the GB200-NVL4 board

GB200-NVL4 PCM for Dual CX8 mezzanine module configuration​

Figure 4. GB200-NVL4 PCM for Dual CX8 mezzanine module configuration

Table 4. GB200-NVL4 PCM for Dual CX8 mezzanine module configuration
Pad numberPad typeScenario requiring pad replacingPad attaching location
1PCMReplace the PCM whenever the GPU cold plate is removed from the tray.On the GB200-NVL4 board and CX8 mezzanine module.

GB200-NVL4 putty pad for Dual CX8 mezzanine module configuration​

Figure 5. GB200-NVL4 putty pad for Dual CX8 mezzanine module configuration

Table 5. GB200-NVL4 putty pad for Dual CX8 mezzanine module configuration
Pad numberPad typeScenario requiring pad replacingPad attaching location
1Putty padReplace the putty pads whenever the GPU cold plate is removed from the tray.On the CX8 mezzanine module.

ConnectX-7 200 adapter putty pads​

Figure 6. ConnectX-7 200 adapter putty pads

Table 6. ConnectX-7 200 adapter putty pads
Pad numberPad typeScenario requiring pad replacingPad attaching location
1Putty pad

Replace the putty pads whenever the ConnectX-7 200 riser assembly is removed.

ConnectX-7 200 interface plate

ConnectX-7 400 adapter putty pads​

Figure 7. ConnectX-7 400 adapter putty pads

Table 7. ConnectX-7 400 adapter putty pads
Pad numberPad typeScenario requiring pad replacingPad attaching location
1Putty pad

Replace the putty pads whenever the ConnectX-7 400 riser assembly is removed.

ConnectX-7 400 interface plate

ConnectX-8 XDR adapter putty pads​

Figure 8. ConnectX-8 XDR adapter putty pads

Table 8. ConnectX-8 XDR adapter putty pads
Pad numberPad typeScenario requiring pad replacingPad attaching location

1

Putty pad

Replace the pads whenever the ConnectX-8 XDR riser assembly is removed.

ConnectX-8 XDR interface plate

OSFP adapter putty pads​

Figure 9. OSFP adapter putty pads

Table 9. OSFP adapter putty pads
Pad numberPad typeScenario requiring pad replacingPad attaching location
1Putty pad

Replace the pads whenever the OSFP riser assembly is removed.

OSFP interface plate

E3.S drive putty pads​



Table 10. E3.S drive putty pads
Pad numberPad typeScenario requiring pad replacingPad attaching location
  • 1
  • 2
Putty padReplace the pad when damaged or missing.Water loop