-PSU: COOLMAX CU-500B (12V1:17A, 12V2:17A, 12V3:12A, it has a PCIE 6 pin cable)
-MSI 785GM-E51 mobo
-Phenom II X2 555 (not overclocked and extra cores not unlocked)
-Intel SSD 120GB 330 Series
-HDD1: Hitachi SATA 1TB
-HDD2: Hitachi SATA 1TB
-New HDD3: Seagate SATA 1TB
Old GPU: GT 240 GDDR3
New GPU: GTS 450
I installed the GTS 450 card and the Seagate HDD. The SSD (which is the boot drive) could not be detected in bios. I thought maybe I had too many SATA drives. I disconnected the new Seagate HDD (power and SATA port). It still did not work. I kept resetting and it finally worked but Windows 7 froze after about 5 minutes. I restarted and SSD was not detected in bios.
I then disconnected all other power connectors (3 HDD's and 1 DVD) and the SSD is working fine. I played NBA2K15 for a couple hours and now it has been streaming music for several hours. Everything seems fine.
Is the GTS 450 drawing too much power from the PSU, that when combined with the power draw from the other drives it is causing the SSD to not work?
Update: The SSD had been powered by a SATA power cable hardwired to the PSU. This was also the case when when it worked after I disconnected the power cables for all other devices. I then re-connected the power cables to all other drives (including the new HDD) as they were previously. I connected the SSD to a different power cable. I used one of the extra modular cables (using a molex to SATA power adapter). It then worked along with all other drives.
I have a few questions:
1. Was the problem caused by having too much of a power draw on a particular 12V rail? By changing the power cable for the SSD only, I am assuming the other cable is on another 12V rail which resolved the issue.
2. Nvidia recommends a 400 Watt PSU with 22Amps on the 12V rail. It does not mention anything about single or multiple rails. Does my 500 watt PSU, which is rated at 17 amps each on rails 12V1 and 12V2 and 12 amps on rail 12V3, meet this requirement?
3a. Would upgrading the PSU provide any performance boost to the GTS 450? I am assuming that with a PSU it is either enough for components to work or not at all with no in between. The system does not appear to run hot and the fan on the GTS 450 is quiet.
3b. With my GT 240, the fan would be loud when turned on and only after Windows started loading then it became quiet (I assume when the drivers were loaded). The GTS 450 is loud for a couple of seconds when turned on but quiet before Windows even starts to load and remains quiet. Is this normal for the GTS 450 or could it be a case of the PSU not having enough power which causes the GTS 450 to go into a low power/performance mode at boot up?
-MSI 785GM-E51 mobo
-Phenom II X2 555 (not overclocked and extra cores not unlocked)
-Intel SSD 120GB 330 Series
-HDD1: Hitachi SATA 1TB
-HDD2: Hitachi SATA 1TB
-New HDD3: Seagate SATA 1TB
Old GPU: GT 240 GDDR3
New GPU: GTS 450
I installed the GTS 450 card and the Seagate HDD. The SSD (which is the boot drive) could not be detected in bios. I thought maybe I had too many SATA drives. I disconnected the new Seagate HDD (power and SATA port). It still did not work. I kept resetting and it finally worked but Windows 7 froze after about 5 minutes. I restarted and SSD was not detected in bios.
I then disconnected all other power connectors (3 HDD's and 1 DVD) and the SSD is working fine. I played NBA2K15 for a couple hours and now it has been streaming music for several hours. Everything seems fine.
Is the GTS 450 drawing too much power from the PSU, that when combined with the power draw from the other drives it is causing the SSD to not work?
Update: The SSD had been powered by a SATA power cable hardwired to the PSU. This was also the case when when it worked after I disconnected the power cables for all other devices. I then re-connected the power cables to all other drives (including the new HDD) as they were previously. I connected the SSD to a different power cable. I used one of the extra modular cables (using a molex to SATA power adapter). It then worked along with all other drives.
I have a few questions:
1. Was the problem caused by having too much of a power draw on a particular 12V rail? By changing the power cable for the SSD only, I am assuming the other cable is on another 12V rail which resolved the issue.
2. Nvidia recommends a 400 Watt PSU with 22Amps on the 12V rail. It does not mention anything about single or multiple rails. Does my 500 watt PSU, which is rated at 17 amps each on rails 12V1 and 12V2 and 12 amps on rail 12V3, meet this requirement?
3a. Would upgrading the PSU provide any performance boost to the GTS 450? I am assuming that with a PSU it is either enough for components to work or not at all with no in between. The system does not appear to run hot and the fan on the GTS 450 is quiet.
3b. With my GT 240, the fan would be loud when turned on and only after Windows started loading then it became quiet (I assume when the drivers were loaded). The GTS 450 is loud for a couple of seconds when turned on but quiet before Windows even starts to load and remains quiet. Is this normal for the GTS 450 or could it be a case of the PSU not having enough power which causes the GTS 450 to go into a low power/performance mode at boot up?
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