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Best power/performance CPU T400

T400/T410/T420 and T500/T510/T520 Series
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Buzon de voz
Posts: 4
Joined: Sun Jun 13, 2021 11:06 am
Location: Argentina, Córdoba

Best power/performance CPU T400

#1 Post by Buzon de voz » Sun Jun 13, 2021 11:14 am

Hi! Im new to the forum. Im from Argentina, if my english sounds weard this is why.
I recently recibed a T400 for free, and found a very good deal for a Advanced dock online ($33). Im trying to build a basic gaming PC but also i bought a new battery, so i dont want to sacrified battery life to get the best performance possible.
I want to upgrade the CPU (current one is p8600 2.4Ghz, 3Mb cache, 25w tdp) and i see 3 options right know:
P9600 (2.66Ghz, 6mb, 25w)
P9700 (2.8Ghz, 6mb, 28w)
T9900 (3.06Ghz, 6mb, 35w)
I dont know how much difference there is, because tdp changes a lot for a little better clocks. Is the jump whort it? I want to pair it with a 1030 and try to play new games at lower settings, 720p 30fps. Im happy with that :)

kfzhu1229
Senior ThinkPadder
Senior ThinkPadder
Posts: 2077
Joined: Tue Sep 22, 2015 10:59 pm
Location: Toronto, Canada

Re: Best power/performance CPU T400

#2 Post by kfzhu1229 » Sun Jun 13, 2021 2:52 pm

Buzon de voz wrote:
Sun Jun 13, 2021 11:14 am
I recently recibed a T400 for free, and found a very good deal for a Advanced dock online ($33). Im trying to build a basic gaming PC but also i bought a new battery, so i dont want to sacrified battery life to get the best performance possible.
I want to upgrade the CPU (current one is p8600 2.4Ghz, 3Mb cache, 25w tdp) and i see 3 options right know:
P9600 (2.66Ghz, 6mb, 25w)
P9700 (2.8Ghz, 6mb, 28w)
T9900 (3.06Ghz, 6mb, 35w)
I dont know how much difference there is, because tdp changes a lot for a little better clocks. Is the jump whort it? I want to pair it with a 1030 and try to play new games at lower settings, 720p 30fps. Im happy with that :)
Well if you want it for gaming you most probably want the most powerful CPU you can get, and that would be the T9900. Pretty sure any of the P series of CPU's would severely bottleneck the 1030 that you would be better off with a GT 730.
But then, the price of a T9900 (assuming the one you get isn't a fake CPU) is so much off the roof that you are better off investing all the money onto a T420/T430.
For casual usage though, I would pick a T9600 (or a T9550 if you wanna step down). It is definitely more power hungry than the P series, but its balance of performance vs the cost of the CPU makes it a great choice if you don't have special routes of getting CPU's at a more reasonable price, such as importing one directly from Taobao or getting a hundred of these T400/T500 and Latitude E6400/E6500 machines and cherry pick a T9800 or T9900 out of it.
Dell Lat CP MMX-233 64mb 40gb W2k
600 PII-266 416mb 40gb WXP
T23 PIII 1.13ghz 1gb W7
Precision M4300 X9000 8gb 160gb WUXGA Ultrasharp fp W10
T530i 15.6" i7 16gb fp W10
UXGA:
A30p PIII 1.2 1gb W7 (IDTech)
T43p 2.26 2gb fp W10 (Sharp)
Lat C840 P4-2.5 2gb 60gb W7 (Ultrasharp)

Buzon de voz
Posts: 4
Joined: Sun Jun 13, 2021 11:06 am
Location: Argentina, Córdoba

Re: Best power/performance CPU T400

#3 Post by Buzon de voz » Sun Jun 13, 2021 4:18 pm

kfzhu1229 wrote:
Sun Jun 13, 2021 2:52 pm
Buzon de voz wrote:
Sun Jun 13, 2021 11:14 am
I recently recibed a T400 for free, and found a very good deal for a Advanced dock online ($33). Im trying to build a basic gaming PC but also i bought a new battery, so i dont want to sacrified battery life to get the best performance possible.
I want to upgrade the CPU (current one is p8600 2.4Ghz, 3Mb cache, 25w tdp) and i see 3 options right know:
P9600 (2.66Ghz, 6mb, 25w)
P9700 (2.8Ghz, 6mb, 28w)
T9900 (3.06Ghz, 6mb, 35w)
I dont know how much difference there is, because tdp changes a lot for a little better clocks. Is the jump whort it? I want to pair it with a 1030 and try to play new games at lower settings, 720p 30fps. Im happy with that :)
Well if you want it for gaming you most probably want the most powerful CPU you can get, and that would be the T9900. Pretty sure any of the P series of CPU's would severely bottleneck the 1030 that you would be better off with a GT 730.
But then, the price of a T9900 (assuming the one you get isn't a fake CPU) is so much off the roof that you are better off investing all the money onto a T420/T430.
For casual usage though, I would pick a T9600 (or a T9550 if you wanna step down). It is definitely more power hungry than the P series, but its balance of performance vs the cost of the CPU makes it a great choice if you don't have special routes of getting CPU's at a more reasonable price, such as importing one directly from Taobao or getting a hundred of these T400/T500 and Latitude E6400/E6500 machines and cherry pick a T9800 or T9900 out of it.
Sorry for my ignorance, but whats the difference between a t9600 and a p9700 other than the price and tpd? if both options perform the same, the lower tdp of the p9700 makes it a more apealing cpu, not only for the power consuption but also the heat.
i consider a T420 for the sandy bridge architecture, but there is no "elegant" solution for a eGPU, and also the T400 was for free! :)
a 1030 is my objective, but in this circunstances i will buy whatever is cheap at the time, like a r7 250 or a gt 730

kfzhu1229
Senior ThinkPadder
Senior ThinkPadder
Posts: 2077
Joined: Tue Sep 22, 2015 10:59 pm
Location: Toronto, Canada

Re: Best power/performance CPU T400

#4 Post by kfzhu1229 » Sun Jun 13, 2021 6:00 pm

Buzon de voz wrote:
Sun Jun 13, 2021 4:18 pm
Sorry for my ignorance, but whats the difference between a t9600 and a p9700 other than the price and tpd? if both options perform the same, the lower tdp of the p9700 makes it a more apealing cpu, not only for the power consuption but also the heat.
i consider a T420 for the sandy bridge architecture, but there is no "elegant" solution for a eGPU, and also the T400 was for free! :)
a 1030 is my objective, but in this circunstances i will buy whatever is cheap at the time, like a r7 250 or a gt 730
I think the big difference between them is more like price and power draw. On ebay the P9700 sells for over twice as much (at where I live) as the T9600, and with the added chance of you receiving a fake.
They are of the same performance though.
I personally don't think that price tag is worth it, but since you have battery life as a serious consideration your verdict can vary.
Also, from my experience with using nvs140m vs igpu, using the integrated graphics can save you lots of battery life
Dell Lat CP MMX-233 64mb 40gb W2k
600 PII-266 416mb 40gb WXP
T23 PIII 1.13ghz 1gb W7
Precision M4300 X9000 8gb 160gb WUXGA Ultrasharp fp W10
T530i 15.6" i7 16gb fp W10
UXGA:
A30p PIII 1.2 1gb W7 (IDTech)
T43p 2.26 2gb fp W10 (Sharp)
Lat C840 P4-2.5 2gb 60gb W7 (Ultrasharp)

Buzon de voz
Posts: 4
Joined: Sun Jun 13, 2021 11:06 am
Location: Argentina, Córdoba

Re: Best power/performance CPU T400

#5 Post by Buzon de voz » Sun Jun 13, 2021 6:31 pm

kfzhu1229 wrote:
Sun Jun 13, 2021 6:00 pm
Buzon de voz wrote:
Sun Jun 13, 2021 4:18 pm
Sorry for my ignorance, but whats the difference between a t9600 and a p9700 other than the price and tpd? if both options perform the same, the lower tdp of the p9700 makes it a more apealing cpu, not only for the power consuption but also the heat.
i consider a T420 for the sandy bridge architecture, but there is no "elegant" solution for a eGPU, and also the T400 was for free! :)
a 1030 is my objective, but in this circunstances i will buy whatever is cheap at the time, like a r7 250 or a gt 730
I think the big difference between them is more like price and power draw. On ebay the P9700 sells for over twice as much (at where I live) as the T9600, and with the added chance of you receiving a fake.
They are of the same performance though.
I personally don't think that price tag is worth it, but since you have battery life as a serious consideration your verdict can vary.
Also, from my experience with using nvs140m vs igpu, using the integrated graphics can save you lots of battery life
It look at it on Aliexpress and youre right, its more than twice the cost for the same performance. But where i live buying tecnology stuff is very expensive, so international cost dont seem to unreasonable to me. I just have to wait like half a year to get one and there no sellers in my country that have any core2duo. Im willing to wait and pay more if it use less power, i want to use this thinkpad as many years as posible and having less heat i think will encrase the lifespam of the device.

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