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dumbass
Joined: 02 Jan 2009
Posts: 12
Location: Philippines
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 Posted: Tue Jan 13, 2009 12:37 am Post subject: PCI-E 2.0 and PCI-E x16 |
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I just got a 9800GT VC and when I install the VC my rig boot up for a second and then it goes blank. Is PCI-E 2.0 have different slot from PCI-E x16?
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Thandor
Joined: 06 Oct 2008
Posts: 461
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| Posted: Tue Jan 13, 2009 5:05 am Post subject: |
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The card should just work in your motherboard. Check if the card is working properly in another system or try running a different graphics card  .
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D.8080
Joined: 03 Apr 2006
Posts: 1474
Location: Italy
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| Posted: Tue Jan 13, 2009 6:21 am Post subject: |
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Do your PSU give enough juice to the card?
Video cards need to have power fed directly to card connections, check if you haven't missed one. |
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Cobracon
Joined: 28 Aug 2007
Posts: 216
Location: Roosterpoot, MS; US of A (Obama country!)
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| Posted: Tue Jan 13, 2009 8:36 am Post subject: |
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Yup, you definitely need to make sure your PSU is up to the task. EVGA (as an example) recommends a power supply which provides a MINIMUM of 26 amps @ the +12 volt output when running a 9800 GT.
Many "branded" computers have notoriously under powered PSU's.
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Thandor
Joined: 06 Oct 2008
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| Posted: Tue Jan 13, 2009 4:37 pm Post subject: |
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| Cobracon wrote: | Yup, you definitely need to make sure your PSU is up to the task. EVGA (as an example) recommends a power supply which provides a MINIMUM of 26 amps @ the +12 volt output when running a 9800 GT.
Many "branded" computers have notoriously under powered PSU's. |
To go slightly offtopic here, many "recommendations of graphic cards" have notoriously overrated power requirements  . Of course an high-end board needs a decent power supply but let me grab my old X1950Pro box: 450W with 30A on 12V for one card. 550W with 38A on 12V for two cards in Crossfire. Where the hell is that 30A and 38A based on? If a system with one card extra needs 8A extra then one card just needs 8A. So better say: the card needs 8A on the 12V rail (and excluding the rest of the system which has individual, non-predictable power requirements. I'm sure I need a bigger PSU then 450W/30A when running the X1950Pro in a quad-CPU Xeon 'Tulsa' setup!). Looking at HP and Medion systems around here I see perfect PSU's with a bit of headroom. Not to much but just fine . (It's useless to put a 450W Delta PSU in a P4 3GHz 'Northwood', a 350W is fine enough and a 300W model will even work out, too!)
Anyhow, you do need a good PSU but don't start thinking about 700W+ models and never go for a 550W Q-Tec (or similar budget 'thing') as they can not keep up with decent PSU's like Tagan, Enermax, Antec (though they had a badcap-time a while ago, it's good now), Delta, OCZ, etc.
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Cobracon
Joined: 28 Aug 2007
Posts: 216
Location: Roosterpoot, MS; US of A (Obama country!)
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| Posted: Tue Jan 13, 2009 8:36 pm Post subject: |
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WoW Thandor, thanks for the unsolicited critique of my post. 
The EVGA recommendation is based on the requirements of the whole system, not just the GPU. If you read deeper into EVGA'a power recommendations, they explain their recommendations are based on an "average" system (while realizing: "what is an average system?").
Your concept of basing PSU requirements based on wattage is outdated, and anyone who keeps up knows any given PSU's overall wattage rating could have all kinds of +12 volt output ratings amongst different brands.
Yes, a PUNY 300 watt PSU (or less) as supplied with some "Close-and-Play" name brand computers will light up the system, but can and WILL create random problems when the PSU runs out of gas during a periodic spike in power demand after upgrading to a higher performance GPU. In short, FAR from perfect; and in fact a cost cutting measure on the part of the name brander. The wise builder or upgrader will allow some headroom so the PSU isn't operating at or near it's maximum output.
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Neon_WA
Joined: 08 Nov 2008
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Location: Margaret River, West Australia
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dumbass
Joined: 02 Jan 2009
Posts: 12
Location: Philippines
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| Posted: Tue Jan 13, 2009 11:14 pm Post subject: |
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Forgot to tell that I also buy a HEC 550watts PSU with the 9800GT VC. I think the HEC PSU have the problems because when I use different PSU it work out just fine. Thanks for the advice guys
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Thandor
Joined: 06 Oct 2008
Posts: 461
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| Posted: Wed Jan 14, 2009 4:45 am Post subject: |
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| Cobracon wrote: | | [b][i]WoW Thandor, thanks for the unsolicited critique of my post. |
Oh, just discussing.
| Quote: | | Your concept of basing PSU requirements based on wattage is outdated, and anyone who keeps up knows any given PSU's overall wattage rating could have all kinds of +12 volt output ratings amongst different brands. |
Hold on- I never stated to compare the wattage of a PSU with other PSU's. That's why I said 'avoid a Q-Tec' as these are the perfect example of having 'lots' of watts but no actual power. And yes, some 350W models have more amps on 5V, others more on 12V but in general I mean the 'average' () in which 5V and 12V are quite balanced.
| dumbass wrote: | | Forgot to tell that I also buy a HEC 550watts PSU with the 9800GT VC. I think the HEC PSU have the problems because when I use different PSU it work out just fine. Thanks for the advice guys |
Then it's probably the PSU .
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