250 Watt Power Supply for 400 Watt Video Card?

[AmericasLastHope]

Hello,

I want to get a new video card, but I'm worried that it might fry my PSU. Here are the specs for the card I want...

Model

Brand
DIAMOND

Model
BV750

Form Factor
Low Profile

Interface

Interface
PCI Express 3.0 x16

Chipset

Chipset Manufacturer
AMD

GPU
Radeon HD 7750

Core Clock
800MHz

Stream Processors
512 Stream Processors

Memory

Effective Memory Clock
1125 MHz

Memory Size
1GB

Memory Interface
128-bit

Memory Type
GDDR5

3D API

DirectX
DirectX 11.1

OpenGL
OpenGL 4.1

Ports

DisplayPort
1 x Mini DisplayPort

DVI
2 x DVI

General

RAMDAC
400 MHz

Max Resolution
4096 x 2160 (DisplayPort)

Eyefinity Support
Yes

CrossFireX Support
Yes

Cooler
With Fan

Slot Width
Single Slot

System Requirements
400W or greater power supply

Power Connector
6 Pin

Dual-Link DVI Supported
Yes

Card Dimensions
Height:2.8" x Length:6.8" x Thickness:1.3"

And here are the specs for the computer I have...


General Spec

Brand
ASUS

Model
P8H61E (BP6320-I53470163B )

Type
Business Desktops & Workstations

Usage
Business

Processor
Intel Core i5-3470 3.2GHz

Processor Main Features
64 bit Quad-Core Processor

Cache Per Processor
6MB L3 Cache

Memory
8GB DDR3 1333

Hard Drive
1TB 7200RPM

Optical Drive 1
Tray-in Supermulti DVD RW 24X

Graphics
Intel HD Graphics 2500

Ethernet
Gigabit Ethernet

Power Supply
250W (80 Plus Bronze)

Operating System
Windows 7 Professional

Software Included
Windows 7 Professional with Windows 8 Pro CD

PC-cillin Trial Version
Office 2010 Starter or Office trial
Nero Essentials (for ODD sku only)

ASUS AI Suite II
ASUS Update
ASUS Q-fan II
ASUS EPU
F9 One Key Restore
ASUS WebStorage
ASUS Secure Delete
ASUS AI Recovery

Motherboard

Chipset
Intel H61

CPU

CPU Type
Intel Core i5

CPU Speed
3470(3.20GHz)

L3 Cache Per CPU
6MB

CPU Socket Type
LGA 1155

CPU Main Features
64 bit Quad-Core Processor
Max Turbo Frequency 3.6 GHz

Graphics

GPU/VPU Type
Intel HD Graphics 2500

Graphics Interface
Integrated video

Memory

Memory Capacity
8GB DDR3

Memory Speed
DDR3 1333

Memory Spec
8GB x 1

Memory Slot (Total)
2

Memory Slot (Available)
1

Hard Drive

HDD Capacity
1TB

HDD RPM
7200rpm

Optical Drive

Optical Drive Type
DVD Super Multi

Optical Drive Spec
Tray-in Supermulti DVD RW 24X

Audio

Audio Channels
6 channels

Audio Features
VIA VT1705, High-Definition Audio

Communications

LAN Speed
Intel 82579V GB LAN

Support Wake On Lan function

Front Panel Ports

Front USB
4 x USB 2.0

Front Audio Ports
2

Back Panel Ports

COM
1

PS/2
2

Video Ports
1 VGA, 1 DVI

Rear USB
4 x USB 2.0

RJ45
1 port

Rear Audio Ports
3 ports

Expansion

PCI Slots (Available/Total)
1 x PCI
1 x PCI-e x 16
2 x PCI-e x 1

Mouse

Mouse Type
USB/PS2 Mouse

Keyboard

Keyboard Type
USB/PS2 Keyboard

Physical Spec

Dimensions
15.75" x 12.99" x 3.78"

Thanks!

 

[rhylton88]

You will definitely need a more powerful power supply to run that card. Get a good name brand around 500 watts.

 

[toyftw]

Hi - It would be a good idea to upgrade your PSU, but you might be able to run that sys with a 250w (if it's a real 250w, plz post brand/model of the PSU), an hd7750 requires very little power. In fact it does not need a pcie power connector, it gets all the power it needs from the pcie slot on the mobo.

Personally, if I could afford to do so, I would upgrade the PSU.

 

[AmericasLastHope]

Hi - It would be a good idea to upgrade your PSU, but you might be able to run that sys with a 250w (if it's a real 250w, plz post brand/model of the PSU), an hd7750 requires very little power. In fact it does not need a pcie power connector, it gets all the power it needs from the pcie slot on the mobo.

Personally, if I could afford to do so, I would upgrade the PSU.

Thanks for the quick responses. According to this site: http://www.mwave.com/mwave/SKUSearch.asp?scriteria=BE60385&pagetitle=DIAMOND%20BV750%20Radeon%20HD%207750%20800MHz%20Core%201GB%20GDDR5%20SDRA#.Up-0buJGZ61 the max power consumption of the video card is 75 watts. Will that make a difference? I will open up the case and get the exact brand/model.

 

[DukiNuki]

Bro its lotta INFO , we dont need that much of info but thanks for providing it . you could jst say 7750 . just a little hint for your next posts to make it quicker & easier for you

& you cant go with PSU that is lower than required wattage from your desired VGA ! always go 100Watt more than what your VGA wants if you wanna be ultra SAFE .

if your VGA card needs atleast 400 then you better go with 500watt PSU ( giving it more headroom , youll need it ) . anything lower than 400 wont power up your hardware ( your hardware wont work ) .

make sure to buy a quality PSU with Enough wattage . its one of the most important factors in a system . because providing required wattage for your whole system is up to PSU

 

[toyftw]

Hi - It would be a good idea to upgrade your PSU, but you might be able to run that sys with a 250w (if it's a real 250w, plz post brand/model of the PSU), an hd7750 requires very little power. In fact it does not need a pcie power connector, it gets all the power it needs from the pcie slot on the mobo.

Personally, if I could afford to do so, I would upgrade the PSU.

Thanks for the quick responses. According to this site: http://www.mwave.com/mwave/SKUSearch.asp?scriteria=BE60385&pagetitle=DIAMOND%20BV750%20Radeon%20HD%207750%20800MHz%20Core%201GB%20GDDR5%20SDRA#.Up-0buJGZ61 the max power consumption of the video card is 75 watts. Will that make a difference? I will open up the case and get the exact brand/model.

Yes, the gpu will pull 75w max, any more and you would need a pcie connector which this card doesn't require.
But, need the brand/model of the PSU to determine if it has enough +12v amps for your system.

If you can't find the brand/model of the PSU, then post the info(a lot of numbers) on the label affixed to the side of the PSU. Such as +3.3v, +5.0v, +12v(most important spec), if more than 1 +12v list them. There should also be totals listed.

 

[AmericasLastHope]

Hi - It would be a good idea to upgrade your PSU, but you might be able to run that sys with a 250w (if it's a real 250w, plz post brand/model of the PSU), an hd7750 requires very little power. In fact it does not need a pcie power connector, it gets all the power it needs from the pcie slot on the mobo.

Personally, if I could afford to do so, I would upgrade the PSU.

Thanks for the quick responses. According to this site: http://www.mwave.com/mwave/SKUSearch.asp?scriteria=BE60385&pagetitle=DIAMOND%20BV750%20Radeon%20HD%207750%20800MHz%20Core%201GB%20GDDR5%20SDRA#.Up-0buJGZ61 the max power consumption of the video card is 75 watts. Will that make a difference? I will open up the case and get the exact brand/model.

Yes, the gpu will pull 75w max, any more and you would need a pcie connector which this card doesn't require.
But, need the brand/model of the PSU to determine if it has enough +12v amps for your system.

If you can't find the brand/model of the PSU, then post the info(a lot of numbers) on the label affixed to the side of the PSU. Such as +3.3v, +5.0v, +12v(most important spec), if more than 1 +12v list them. There should also be totals listed.

 

[AmericasLastHope]

I don't know if this means anything, but it was a pain to try to get. From behind the fan on the power supply I was able to shine a flashlight in and get the following:

API R 25I11 -00 01 I F1
HI-POTCIS.04 1317 AA

Otherwise because of the way the chassis is set up I couldn't open up the PSU case to get anymore specs without fear of breaking it.

 

[toyftw]

I don't know if this means anything, but it was a pain to try to get. From behind the fan on the power supply I was able to shine a flashlight in and get the following:

API R 25I11 -00 01 I F1
HI-POTCIS.04 1317 AA

Otherwise because of the way the chassis is set up I couldn't open up the PSU case to get anymore specs without fear of breaking it.

Hi again - without knowing the PSU specs I can't tell whether you have enough power (I suspect no) or not. I suspect it is not a std ATX PSU. What is the brand/model # of your system?

However, you do not need 400w as the GPU mfg says. GPU makers inflate the power requirements to allow for crap PSU's that don't deliver publ specs and old PSU designs that don't have enough of their total on the +12v rail(s),
which is where the CPU & GPU draw their power from.

realhardtechx (and this is their expertise) suggests a 350w PSU for a system with a 7750, and they build in some headroom.
http://www.realhardtechx.com/index_archivos/Page362.htm

 

[AmericasLastHope]

I finally have the PSU specs...

Type
TFX12V v2.3

Maximum Power
300W

Fans
8cm Double Ball Bearing

PFC
Active

Main Connector
24Pin

SATA Power Connector
2

Haswell Support
No

Efficiency
> 82%

Energy-Efficient
80 PLUS BRONZE Certified

Over Voltage Protection
Yes

Input Frequency Range
47 - 63 Hz

MTBF
>100,000 Hours

Approvals
CUL, TUV, CB, CE, FCC, C-tick

Dimensions
6.9" x 3.3" x 2.8"

Features

Features
• Pentium 4 ready with P4 connectors
• Forward converter circuit
• High efficiency and reliability
• Low ripple & noise
• Super low noise fan control
• Short circuit protection on all outputs
• Over power protection
• 100% hi-pot test
• 100% burn in, high temperature cycled on/off

 

[AmericasLastHope]

No one knows if this will be sufficient?

PSU TFX 300W BRONZE ERP2013

 

[toyftw]

No one knows if this will be sufficient?

PSU TFX 300W BRONZE ERP2013

Hi - The important spec is still missing, the +12v rail(s) amps. Your system requires
16 +12v amps., decent quality 300w PSU's will have 20-25 +12v amps.

You should be OK, but can't be 100% sure without knowing what your PSU's
+12v amps is. I'd try it & see. I'd be surprised if it didn't have more than 16 +12v amps.