PCI-E x16 25W limit, GPU needs max 30W - AMD R7 240 in dc7700 small factor, please help
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- PCI Express
- Computers
- Hewlett Packard
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Graphics
Last response: in Graphics & Displays
xdon82
November 25, 2013 2:42:40 AM
Hello
I have HP dc7700 small factor computer
PSU model: DPS-240FB - 240W I found out it's Delta Inc product
V12 11.5A VCPU
V12 7.5A
E6600 processor [max 65W]
4 x 1 GB DDR2 RAM
1x HDD regular SATA
1x DVD-ROM
2x about 80mm FANs
I want to upgrade my GPU
I found interesting new card, perhaps it's not powerful, but not bad
it's AMD R7 240 - Max TDP 30W
So, probably PSU can handle it
but
on the producent site there is terrible information: http://h18000.www1.hp.com/products/quickspecs/12543_ca/...
PAGE 11
Power for PCI-E x16 is limited to 25W
and I have 3 questions:
1. is it only kinda recommendation not to exceed 25W due to weak PSU
2. if it's limited , so in which way ? by software [bios] hardware?
any possibility to gget additional 5W
3. what will happen if I put 30W GPU into 25W PCI-E x16 slot ?
any ideas what to do?
only 5W to be happy
I have HP dc7700 small factor computer
PSU model: DPS-240FB - 240W I found out it's Delta Inc product
V12 11.5A VCPU
V12 7.5A
E6600 processor [max 65W]
4 x 1 GB DDR2 RAM
1x HDD regular SATA
1x DVD-ROM
2x about 80mm FANs
I want to upgrade my GPU
I found interesting new card, perhaps it's not powerful, but not bad
it's AMD R7 240 - Max TDP 30W
So, probably PSU can handle it
but
on the producent site there is terrible information: http://h18000.www1.hp.com/products/quickspecs/12543_ca/...
PAGE 11
Power for PCI-E x16 is limited to 25W
and I have 3 questions:
1. is it only kinda recommendation not to exceed 25W due to weak PSU
2. if it's limited , so in which way ? by software [bios] hardware?
any possibility to gget additional 5W
3. what will happen if I put 30W GPU into 25W PCI-E x16 slot ?
any ideas what to do?
only 5W to be happy
More about : pci x16 25w limit gpu max 30w amd 240 dc7700 small factor
Best solution
americanbrian
November 25, 2013 2:50:42 AM
I think you will be fine. The PCI-E standard states that a graphics card should be able to pull 75W of power off of the mobo interface safely. The 25W limit is for any other type of expansion card...
http://en.wikipedia.org/wiki/PCI_Express
http://en.wikipedia.org/wiki/PCI_Express
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xdon82
November 25, 2013 3:05:18 AM
Unfortunetely producent has limited this to 25W for PCI-E x16 too
look at the documentation - table on page 11
http://h18000.www1.hp.com/products/quickspecs/12543_ca/...
there is awful limitation
but I don't know what kind of the limit it is
look at the documentation - table on page 11
http://h18000.www1.hp.com/products/quickspecs/12543_ca/...
there is awful limitation
but I don't know what kind of the limit it is
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americanbrian
November 25, 2013 3:08:46 AM
xdon82
November 25, 2013 3:13:58 AM
if you read my source..... so I don't understand the data in the doc..strange.
look carefuly SFF version of my comp can supply 25W for PCI-E x16
CMT - 75W
really I'm confused
I'm waiting for the answers of the users who had similar problem....I mean: producent tells there is only 25W in the slot, but in the fact you can get more...??
look carefuly SFF version of my comp can supply 25W for PCI-E x16
CMT - 75W
really I'm confused
I'm waiting for the answers of the users who had similar problem....I mean: producent tells there is only 25W in the slot, but in the fact you can get more...??
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americanbrian
November 25, 2013 3:20:33 AM
xdon82
November 25, 2013 3:22:43 AM
xdon82
November 25, 2013 3:27:25 AM
americanbrian
November 25, 2013 3:35:09 AM
xdon82
November 25, 2013 3:40:53 AM
xdon82
November 28, 2013 3:07:15 AM
xdon82
November 28, 2013 11:11:21 PM
Marco Giannetta
March 7, 2014 12:57:05 PM
xdon82 said:
Oh, everything is OK..this card is PCI-E 8x not 16x ..16x was written everywhere, but when I looked very close to the spec, I have realised it's 8x...16x is only about the size of pci-e so it's PCI-e 16x @ 8x [if I can write in that way] Thank You for previous adviceHi xdon82, I got your same PC (dc7700 SFF) , can you tell me how is this R7 240?
Right now I've a Radeon HD 5450 which is very bad for gaming
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Jaalsuor
March 22, 2014 9:30:49 AM
Marco Giannetta
March 23, 2014 12:59:45 PM
xdon82
March 23, 2014 4:46:30 PM
Marco Giannetta said:
xdon82 said:
Oh, everything is OK..this card is PCI-E 8x not 16x ..16x was written everywhere, but when I looked very close to the spec, I have realised it's 8x...16x is only about the size of pci-e so it's PCI-e 16x @ 8x [if I can write in that way] Thank You for previous adviceHi xdon82, I got your same PC (dc7700 SFF) , can you tell me how is this R7 240?
Right now I've a Radeon HD 5450 which is very bad for gaming
Considering so weak PSU it works very good. Most games at ready HD or full HD resolution play with 75%-100% of full details at 25-30fps [and even more in many games]
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xdon82
March 23, 2014 4:53:30 PM
Jaalsuor said:
I have a XFX Radeon HD 6670 2GB DDR3 (63 Watts) on an HP 6005 SFF and works smoothly. Games with PES 2013 or 2033 METRO run well at a maximum resolution of 1366 x 768.on R7 240 PES 2013 run smoothly at higher resolution
By the way HD 6670 takes power twice than R7 240. In my case PSU is not overloaded at all
Have you checked your voltage at V12 line when load ?
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xdon82
March 23, 2014 4:56:13 PM
Marco Giannetta said:
Jaalsuor said:
I have a XFX Radeon HD 6670 2GB DDR3 (63 Watts) on an HP 6005 SFF and works smoothly. Games with PES 2013 or 2033 METRO run well at a maximum resolution of 1366 x 768.Very good to know, I think am gonna take a Radeon HD 7750 instead of this bad r7 240
You're gonna to go at total limits of your PSU - be careful
HD 7750 takes much more power than R7 240
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Marco Giannetta
March 24, 2014 7:13:38 AM
xdon82 said:
Marco Giannetta said:
xdon82 said:
Oh, everything is OK..this card is PCI-E 8x not 16x ..16x was written everywhere, but when I looked very close to the spec, I have realised it's 8x...16x is only about the size of pci-e so it's PCI-e 16x @ 8x [if I can write in that way] Thank You for previous adviceHi xdon82, I got your same PC (dc7700 SFF) , can you tell me how is this R7 240?
Right now I've a Radeon HD 5450 which is very bad for gaming
Considering so weak PSU it works very good. Most games at ready HD or full HD resolution play with 75%-100% of full details at 25-30fps [and even more in many games]
xdon82 said:
Marco Giannetta said:
Jaalsuor said:
I have a XFX Radeon HD 6670 2GB DDR3 (63 Watts) on an HP 6005 SFF and works smoothly. Games with PES 2013 or 2033 METRO run well at a maximum resolution of 1366 x 768.Very good to know, I think am gonna take a Radeon HD 7750 instead of this bad r7 240
You're gonna to go at total limits of your PSU - be careful
HD 7750 takes much more power than R7 240
In terms of wattage, I read some reviews which state max power consumption (full system consumption) with HD 7750 rated at about 140 W on full load.
HD 7750 has a max tdp of 50/55 W so I don't think it's so power demanding, but I know I should consider the amperage too
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Khaleal
March 24, 2014 7:25:15 AM
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