Will HD 7750 run on 250W PS with C2D processor (Dell Inspiron 530S PC)
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- Dell Inspiron
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Last response: in Graphics & Displays
tarunbugs
July 10, 2014 11:08:06 AM
tarunbugs said:
I am using a Dell Inspiron 530S desktop with 250W power supply, core 2 duo processor 2 GB DDR3 RAM, 320 GB Hard Disk. Will HD 7750 run with current specs?Yes it will run. I used to have a 530S with the same power supply and it ran fine. Upgrade your RAM though.
(Also, isn't it DDR2 RAM? I know mine was)
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tarunbugs
July 10, 2014 2:20:52 PM
Shadowblade2652 said:
tarunbugs said:
I am using a Dell Inspiron 530S desktop with 250W power supply, core 2 duo processor 2 GB DDR3 RAM, 320 GB Hard Disk. Will HD 7750 run with current specs?Yes it will run. I used to have a 530S with the same power supply and it ran fine. Upgrade your RAM though.
(Also, isn't it DDR2 RAM? I know mine was)
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tarunbugs
July 10, 2014 2:22:49 PM
The Dell 250w PSU can output at most 17a on the +12v rail. It is that rail the most of the components in a PC draws power from. That includes the CPU and the GPU.
17a means the PSU can deliver up to 204w power on the +12v rail. The Radeon HD 7750 consumes 41w on average and 43w peak. That is roughly 20% of the available power on the +12v rail. How much power the CPU draws depends on the actual model.
Assuming the CPU is the C2D E6600 that CPU should draw 55w with a 100% load (I have that CPU in a old HTPC). Combined with the Radeon HD 7750 that works out to peak power of 98w. Toss in another 50w for various other components like the motherboard itself, fans, 1 hard drive and 1 optical drive. Total power works out to an estimated 148w.
Since the estimated 148w peak power works out to 72.5% of the total capacity of the +12v rail I would say it should be within the safe limits of the PSU's +12v output.
But... There is always a but... The quality of the PSU is important. Around the time Dell was selling PCs using the Core 2 Duo and Core 2 Quad CPUs they were using PSU from Delta and FSP. Both are good brands and should be able to handle the load. However, I have read that some of the Dells were using PSUs from Bestec. Not sure if they were replacement PSUs or they were PSUs shipped with the Dell PC. I do not have much confidence in Bestec, in fact I recommend people to avoid that brand entirely.
If the power supply has a sticker on it that states Delta or FSP, I then I have no problems with installing the Radeon HD 7750. If the sticker states Bestec, then I would recommend you replace it with a FSP PSU that will fit. I don't think Delta sells a "replacement PSU" to consumers.
17a means the PSU can deliver up to 204w power on the +12v rail. The Radeon HD 7750 consumes 41w on average and 43w peak. That is roughly 20% of the available power on the +12v rail. How much power the CPU draws depends on the actual model.
Assuming the CPU is the C2D E6600 that CPU should draw 55w with a 100% load (I have that CPU in a old HTPC). Combined with the Radeon HD 7750 that works out to peak power of 98w. Toss in another 50w for various other components like the motherboard itself, fans, 1 hard drive and 1 optical drive. Total power works out to an estimated 148w.
Since the estimated 148w peak power works out to 72.5% of the total capacity of the +12v rail I would say it should be within the safe limits of the PSU's +12v output.
But... There is always a but... The quality of the PSU is important. Around the time Dell was selling PCs using the Core 2 Duo and Core 2 Quad CPUs they were using PSU from Delta and FSP. Both are good brands and should be able to handle the load. However, I have read that some of the Dells were using PSUs from Bestec. Not sure if they were replacement PSUs or they were PSUs shipped with the Dell PC. I do not have much confidence in Bestec, in fact I recommend people to avoid that brand entirely.
If the power supply has a sticker on it that states Delta or FSP, I then I have no problems with installing the Radeon HD 7750. If the sticker states Bestec, then I would recommend you replace it with a FSP PSU that will fit. I don't think Delta sells a "replacement PSU" to consumers.
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Reply to jaguarskx
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jaguarskx said:
The Dell 250w PSU can output at most 17a on the +12v rail. It is that rail the most of the components in a PC draws power from. That includes the CPU and the GPU.17a means the PSU can deliver up to 204w power on the +12v rail. The Radeon HD 7750 consumes 41w on average and 43w peak. That is roughly 20% of the available power on the +12v rail. How much power the CPU draws depends on the actual model.
Assuming the CPU is the C2D E6600 that CPU should draw 55w with a 100% load (I have that CPU in a old HTPC). Combined with the Radeon HD 7750 that works out to peak power of 98w. Toss in another 50w for various other components like the motherboard itself, fans, 1 hard drive and 1 optical drive. Total power works out to an estimated 148w.
Since the estimated 148w peak power works out to 72.5% of the total capacity of the +12v rail I would say it should be within the safe limits of the PSU's +12v output.
But... There is always a but... The quality of the PSU is important. Around the time Dell was selling PCs using the Core 2 Duo and Core 2 Quad CPUs they were using PSU from Delta and FSP. Both are good brands and should be able to handle the load. However, I have read that some of the Dells were using PSUs from Bestec. Not sure if they were replacement PSUs or they were PSUs shipped with the Dell PC. I do not have much confidence in Bestec, in fact I recommend people to avoid that brand entirely.
If the power supply has a sticker on it that states Delta or FSP, I then I have no problems with installing the Radeon HD 7750. If the sticker states Bestec, then I would recommend you replace it with a FSP PSU that will fit. I don't think Delta sells a "replacement PSU" to consumers.
A Dell Inspiron 530s will typically use a bestec 250w.
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