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45 W vs 65 W

Ashutosh
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Go to solution Solved by r4tch3t,

The 940mx uses 15-30w depending if overclocked/4gb. 9200u uses 15w. + screen ram etc. It should be ok it's unlikely to be at full load for long periods.

It should do ok bit wont charge the battery when gaming.

I'd still try and get a 65w

Posted

I have a Dell Inspiron 7460 laptop. It's original charger stopped working so I went to the dell store to buy a new one. The machine was shipped with a 65 W charger and has a 42Whr battery. The retailer gave me a 45 W charger and told me it will work just fine. 

I compared the output of both the chargers and there was a difference of approximately 1 amp. I think the new 45 W will take longer to charge my laptop. Am I wrong? 

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yeah, you are right, sometimes it wont even charge the battery, only provide the current for the functioning of the pc

 

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What's the specs first

Desktop specs:

Spoiler

AMD Ryzen 5 5600 Thermalright Peerless Assassin 120 SE ARGB Gigabyte B550M DS3H mATX

Asrock Challenger Pro OC Radeon RX 6700 XT Corsair Vengeance LPX 16GB (8Gx2) 3600MHz CL18 Kingston NV2 1TB PCIe 4.0 NVMe SSD

Montech Century 850W Gold Tecware Nexus Air (Black) ATX Mid Tower

Laptop: Lenovo Ideapad 5 Pro 16ACH6

Phone: Xiaomi Redmi Note 10 Pro 8+128

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3 minutes ago, wojtepanik said:

yeah, you are right, sometimes it wont even charge the battery, only provide the current for the functioning of the pc

 

It was charging the laptop in the store. I'll wait for a day and try it out if it doesn't work then I'll get it replaced. 

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The new PSU just can't put out as many amps. 45W should be able to power the laptop fine, just battery charging is slower.

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7 minutes ago, ZM Fong said:

What's the specs first

Do the specs even matter here? It's just about the charger and battery. 

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Posted (edited)
13 minutes ago, Ashutosh said:

Do the specs even matter here? It's just about the charger and battery. 

yep because the smaller charger with near maxed out settings may not be able to keep the laptop running at 100% without draining battery.

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So the specs are as follows :

I5 7200u

8 gb DDR4 single stick 

1 tb 5400 rpm hard disk 

Nvidia 940 mx 2gb

42 Whr battery 

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57 minutes ago, Ashutosh said:

Do the specs even matter here?

Of course

 

battery don't matter much

Desktop specs:

Spoiler

AMD Ryzen 5 5600 Thermalright Peerless Assassin 120 SE ARGB Gigabyte B550M DS3H mATX

Asrock Challenger Pro OC Radeon RX 6700 XT Corsair Vengeance LPX 16GB (8Gx2) 3600MHz CL18 Kingston NV2 1TB PCIe 4.0 NVMe SSD

Montech Century 850W Gold Tecware Nexus Air (Black) ATX Mid Tower

Laptop: Lenovo Ideapad 5 Pro 16ACH6

Phone: Xiaomi Redmi Note 10 Pro 8+128

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41 minutes ago, Ashutosh said:

So the specs are as follows :

I5 7200u

8 gb DDR4 single stick 

1 tb 5400 rpm hard disk 

Nvidia 940 mx 2gb

42 Whr battery 

there's a dGPU so you need 65Wh charger

Desktop specs:

Spoiler

AMD Ryzen 5 5600 Thermalright Peerless Assassin 120 SE ARGB Gigabyte B550M DS3H mATX

Asrock Challenger Pro OC Radeon RX 6700 XT Corsair Vengeance LPX 16GB (8Gx2) 3600MHz CL18 Kingston NV2 1TB PCIe 4.0 NVMe SSD

Montech Century 850W Gold Tecware Nexus Air (Black) ATX Mid Tower

Laptop: Lenovo Ideapad 5 Pro 16ACH6

Phone: Xiaomi Redmi Note 10 Pro 8+128

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  • Solution

The 940mx uses 15-30w depending if overclocked/4gb. 9200u uses 15w. + screen ram etc. It should be ok it's unlikely to be at full load for long periods.

It should do ok bit wont charge the battery when gaming.

I'd still try and get a 65w

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 I don't play games on this laptop, i mostly use it for browsing and watching movies etc. This charger takes about 2 hours 10 minutes to fully charge the laptop. I think I can live with it. Thank you everyone. 

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