7900gs

D

Diesel-man3000

Limp Gawd
Joined
Jun 25, 2007
Messages
130
I got my 7900gs last week and installed it in my dell e521 i didn't have the connectors for the external power but it powered on anyway and seemed to be working alright,and fan was on exc.. I was playing supcom the other nigh ton campaign and sometimes i will get these random lockup i can mover mouse everthing but can't click any units and screen is frozen,and i will do ctrl-alt-del and then and not close the game and then i click it to bring it back up and evrything will be alright.Another problem i just got the other night was while i was playin sup com my screen went blank then came back on and it repeated like 4-5 times then i got a couple messages saying display had lost connection or something like that and had recconected.I got the exteranl connector converter from thermaltake from newegg today and connected all external power cables from the card to the extra power plug i had by the drive bays.I can tell that its using alot more power cus its alot louder and i opened the case and its the fan making the noise pretty sure its running even faster now.

My specs are 3800 x2,3 gigs ram,7900gs ko 256 mb.

any input would be nice about to play supcom to see whether it happens again.
 
uhhh so you didn't connect the pci-express power connector and it didn't work, then you connected it and it does work... wow big surprise :rolleyes:
 
HarkovAdm said:
uhhh so you didn't connect the pci-express power connector and it didn't work, then you connected it and it does work... wow big surprise :rolleyes:
Click to expand...

Seriously though, HarkovAdmin is correct. When the 6-pin connection on the GPU isn't occupied the card works off of the power of the PCI-Express Slot which is only 75 watts. Just enough to power it and go into a nominal 3D mode but not enough to get into a really intensive game like SupCom. When the connector is connected, the GPU is supplied with 175 (DQMOT) more watts through the connection. (Now it doesn't stay at a constant 250watt supply all the time only when gaming like in SupCom when the GPU needs the extra juice.)

Now you know. ;)

BTW DQMOT 175 watts thing, it does supply more power but I don't know exactly how much.
 
CptFalcon said:
Seriously though, HarkovAdmin is correct. When the 6-pin connection on the GPU isn't occupied the card works off of the power of the PCI-Express Slot which is only 75 watts. Just enough to power it and go into a nominal 3D mode but not enough to get into a really intensive game like SupCom. When the connector is connected, the GPU is supplied with 175 (DQMOT) more watts through the connection. (Now it doesn't stay at a constant 250watt supply all the time only when gaming like in SupCom when the GPU needs the extra juice.)

Now you know. ;)

BTW DQMOT 175 watts thing, it does supply more power but I don't know exactly how much.
Click to expand...

Quoted!!! Just kidding. But to answer your question, you get 75 watts from the PCI-E slot, and 75 watts from the 6 pin PCI-E connector, totalling 150 watts.

If you have a card with 2 6-pin plugs (like the 8800GTX), you can use up to 225 watts.

The R600 is capable of using even more, as it has 1 6-pin and 1 8-pin. An 8-pin can supply 150 watts. Therefore, an R600 can use as much as 300 watts :)
 
I'm not sure what you expected the performance would end up like without the main power cable plugged in :confused:

So yeah stick that back on and you're good to go.
 
wel does that explain the part where my screen would go black then come back and i got the error while the game was still running saying the display adaptor had loss connection and had restablished it,that was without the connector.I haven't tested it with the connector on,also my 3dmark06 score dropped by a lil over 100 points.i got like 4437 withought connectors,with i got 4311?
 
Your card will not run properly without the connector, and as such you would encounter errors. That is why the connector is there. That is why you encountered errors.

As for 3dmark, you cannot just run it once and use the number - with the exact same system setup, you could run it 3 times and get three different numbers, each 100 points off. What you would do is run it 3 times or so, and average the number to account for the variancy.
 
Diesel-man3000 said:
wel does that explain the part where my screen would go black then come back and i got the error while the game was still running saying the display adaptor had loss connection and had restablished it,that was without the connector.I haven't tested it with the connector on,also my 3dmark06 score dropped by a lil over 100 points.i got like 4437 withought connectors,with i got 4311?
Click to expand...

Really, anything could happen without enough power. Imagine trying to run your house on 2/3 the power it needs. You go around your house turning everything on and suddenly everything dies.

It makes sense that a GPU would shut down when it is pushed too hard and not supplied with enough power. When you use a 3d app the chip will heat up and use more power, so obviously the problems you encounter occur when you max out your 75 watts and are not supplying enough (without the plug).

Every card has to be plugged into the powersupply with the plug if the card has one. Otherwise you could easily damage your card and cause it to die or just degrade prematurely.
 
Sr7 said:
Really, anything could happen without enough power. Imagine trying to run your house on 2/3 the power it needs. You go around your house turning everything on and suddenly everything dies.

It makes sense that a GPU would shut down when it is pushed too hard and not supplied with enough power. When you use a 3d app the chip will heat up and use more power, so obviously the problems you encounter occur when you max out your 75 watts and are not supplying enough (without the plug).

Every card has to be plugged into the powersupply with the plug if the card has one. Otherwise you could easily damage your card and cause it to die or just degrade prematurely.
Click to expand...

Good analogy. Here's another:

It's like running your car without oil. You know there's a place for oil to go into, and the manual says "do not use without oil", but you try it out and it works without oil! Yay! Lets forget about oil now, since the car runs without it.

Then...things start to go wrong with your car, and you wonder why....sure there are plenty of reasons it wouldnt work right, but maybe...just maybe...hrm... :)

Sorry for sarcasm, it's hard to turn it off sometimes lol.
 
I said i got 4437 with 3dmark 06 without the connectors connected,and with them on i dropped my score by 100 points does that make sense
 
nope? The card should have come with a molex adapter dongle incase your psu doesnt have
a pci-express connector.
 
Diesel-man3000 said:
I said i got 4437 with 3dmark 06 without the connectors connected,and with them on i dropped my score by 100 points does that make sense
Click to expand...

JackAshley said:
Your card will not run properly without the connector, and as such you would encounter errors. That is why the connector is there. That is why you encountered errors.

As for 3dmark, you cannot just run it once and use the number - with the exact same system setup, you could run it 3 times and get three different numbers, each 100 points off. What you would do is run it 3 times or so, and average the number to account for the variancy.
Click to expand...

He already told you why, 3dmark isn't an exact number, you can run it multiple times without changing anything and get different results.
 
Diesel-man3000 said:
I said i got 4437 with 3dmark 06 without the connectors connected,and with them on i dropped my score by 100 points does that make sense
Click to expand...

Yes, and as I said, you can run 3dmark several times and it can vary 100, even 200 points, maybe more. 3dmark is NOT EXACT, and as I said you should run it MULTIPLE TIMES in order to get an AVERAGE.
 
i'm surprised your card still works at all... benching it with half power. It prolly thinks you're crazy so it's running throttled down forever now.


seriously though wtf?!?


(I pull maybe 5/5.5K with my 7900gs)
So if you're underclocked around 450/1300 i'd say your scores right where it needs to be at.
 
well i havn't oced and my card seems to be using alot more power now seeing as in it didn't make really any noise at all.I guess the reason it didn't is because the fan was on a low speed but it was on,Now the fan is alot louder i wouldn't be surprised if its on its highest idk but its pretty loud now,also i havn't got a shutoff in supcom as of now.and my core clock is 502 and mem clock is 688.Also the idle temp i think is 48 or thats what its running at while not playing a game
 
lol i did i just thought it would be fine for about a week and when i tested it with my first test on the windows experience test it got 5.9 on both graphics test.I just went to the index thing today and it said it reconized new hardware so i tested it again and my score for 3d games dropped to 5.5 instead of 5.9,then i tested again and it scored 5.6,and then i cut it off while i went to the store and i tested it again when i got back and its now 5.8 weird chain here.I might send it in for new one saying something like picky performance idk
 
Dude you can't send that back in. Theres nothing wrong with it.

JUST PLUG THE DAMN POWER CHORD IN.

Its like putting a 4 cylinder engine in a ferrari and asking why it isn't driving like it should.
 
aeonrevolution said:
Dude you can't send that back in. Theres nothing wrong with it..
Click to expand...

Yet... You starve that thing of power long enough you're going to damage it. Permanently. That 6 pin PEG connector is there for a REASON, not just for decoration.

aeonrevolution said:
JUST PLUG THE DAMN POWER CORD IN
Click to expand...

Seriously dude... Listen to him. We're trying to help. Performance fluctuations that major are not good. Don't come crying to us if you fry it just to see how much it fluctuates with out the power cable plugged in.

aeonrevolution said:
Its like putting a 4 cylinder engine in a ferrari and asking why it isn't driving like it should
Click to expand...

Again, RTFM. And why the dual molex to 6-pin PEG adapter wasn't included is beyond me.
 
wow you guys aren't hearing a thing i said i have a dell psu which doesn't have a 6 pin pci-express connector,and the card worked without it so i left the card in and used it while i was waiting for the convertor to give it power,the day before i got the cable the card started messing up with supcom and losing connection.I now have it hooked in and with cables and everything and have tested 3d mark several times post cable hookup,and have now tested it 3 times with the cable hooked in and my score is now 100 points less solid.Also my vista experience score went from 5.9 gaming graphics to 5.5,then to 5.6 ,and then to 5.8.I then did a few more runs to see whether it would switch the score again,and its stayed at 5.8 the last few test.

and you guys are saying that they won't let me send it in if i think the performance has degraded?it is a evga card thats 1st class customer service.
 
Vista gaming tests mean jack Sh!t in my opinion.

If you have Counter-Strike Source run the benchmark on that. Its quick and easy and you can see the results when hardware clock speeds are adjusted.

Other than that, I wouldn't really think .1 or .2 difference in that means anything.


And yeah Evga will send you another 7900gs that is exactly the same. I HIGHLY doubt you degraded the performance from a few times doing that.
 
Diesel-man3000 said:
I might send it in for new one saying something like picky performance idk
Click to expand...

One of the reason video card prices are so high its because they must replace perfectly fine video cards because the owners refused to treat them properly.
 
i'm having similar issues - the power loss to th emonitor - andI have my 6 pin plugged in.

Last night, i had vbios issues... same card as the OP.
 
Diesel-man3000 said:
wow you guys aren't hearing a thing i said i have a dell psu which doesn't have a 6 pin pci-express connector,and the card worked without it so i left the card in and used it while i was waiting for the convertor to give it power,the day before i got the cable the card started messing up with supcom and losing connection.I now have it hooked in and with cables and everything and have tested 3d mark several times post cable hookup,and have now tested it 3 times with the cable hooked in and my score is now 100 points less solid.Also my vista experience score went from 5.9 gaming graphics to 5.5,then to 5.6 ,and then to 5.8.I then did a few more runs to see whether it would switch the score again,and its stayed at 5.8 the last few test.

and you guys are saying that they won't let me send it in if i think the performance has degraded?it is a evga card thats 1st class customer service.
Click to expand...

We hear you just fine - and the consensus is that YOU may have messed up the card by not using it properly, and that is why your performance MAY have degraded, though you still havent replied to the advice any of us have given about doing MULTIPLE 3dmark runs to get an average.

As for why evga should replace a card because you messed it up is beyond me, especially when you may only THINK there is a probelm - you may not have actually messed anything up! You have to stop relying on your SINGLE (synthetic) 3dmark runs and synthetic windows benchmarks.
 
wow i said i ran 3d mark 3-4 times before i got the cable in the mail,my score was 4437 consecutively give or take a few points.When i got the cable my score droped by 100 points and that is an average after 3 runs i did when i connected the cable .
 
100 points is nothing.

It's fine. Your card is fine.

Move on.

BTW, all eVGA PCI-E cards come with a molex -> PCI-E adapter.
 
Diesel-man3000 said:
wow you guys aren't hearing a thing i said i have a dell psu which doesn't have a 6 pin pci-express connector,and the card worked without it so i left the card in and used it while i was waiting for the convertor to give it power,the day before i got the cable the card started messing up with supcom and losing connection.I now have it hooked in and with cables and everything and have tested 3d mark several times post cable hookup,and have now tested it 3 times with the cable hooked in and my score is now 100 points less solid.Also my vista experience score went from 5.9 gaming graphics to 5.5,then to 5.6 ,and then to 5.8.I then did a few more runs to see whether it would switch the score again,and its stayed at 5.8 the last few test.

and you guys are saying that they won't let me send it in if i think the performance has degraded?it is a evga card thats 1st class customer service.
Click to expand...

My bad...

It's just that you didn't word it so that it was explicitly clear that it was plugged in during your 3DMark runs.

Anyways maybe giving EVGA a call isn't that bad an idea, just to see what they have to say about the situation.
 
I do have a 360,but why does that mean i should stick to consoles maybe some people want to experience the best of both worlds?This was my very first computer i thought i could buy a dell and it would be very upgradeble.i make one mistake and leave my card in without extra power thinking it would be fine till i get the chord which i ordered the same night oncei realized i needed it.The best way to learn is to do it and learn from mistakes i have learned i will never do something like that agian.

What you said was very arrogant and stupid.
 
I thought there was built in circuitry to prevent overdraw from the pcie. If so, then it should not have done any damage to the card. Just resulted in erratic behavior. That said, it's good that you've got the molex converter plugged in now. 100 points is well within margin of error. If it's stable, time to start overclocking :)

Also, go back to xp/2003. Vista + 7900 blows
 
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