Power Draw via MXM Interface

Anyone know what the max power draw a GPU can pull through the MXM interface? i just ask because I see MSI releasing 1070s and 1080s without external power and Clevo releasing with power (but not compatible to the previous model of the P870DM-G). So I am wondering if the lack of external power input will affect performance?

 

dont quote me on this but id say max continuous power draw around 150W and max peak around 195-200W.

 

If you are designing the card, the motherboard and choosing the socket provider it can vary a LOT, also the TDP of the cards can vary a lot now too.

 

Older generation boards where designed for up to 125W. Over the last years designs targeted more like 150W.

1080:

- TDP (Core): 125W+
- TGP (MXM): 150W-220W (vendor dependent)

1070:

- TDP (Core): 85W
- TGP (MXM): 115W

1060:

- TDP (Core): 65W
- TGP (MXM): 78W

 

I think the first set of MXM-B was 75W with the 480M being the first to push up to the 100W mark.

 

very interesting numbers right there for the 1070, that explains why 3.0b designs were possible in the Zotac Zbox systems it consumes even less power than a 980M!!!

 

so why does the Clevo MXM cards have external power then?

 

$$$

 

It was cheaper to re-use a single design for all new Clevo cards after NVIDIA stopped carrying the entire designing costs and is only providing guidelines and assistance.

 

so is there any benefit for the Clevo 1070 to get external power when compared to the MSI version? like more power = better overclocking etc.?

 

Once fully unlocked probably, stock not so much except reducing the load on the slot itself.

 

oh ok, the 1070 laptop seems to have a bigger boost over the desktop variant of 202MHz while the desktop has boost of 177MHz. I only have to OC by 38MHz to reach the desktop's boost clock or 63MHz to align to the desktop's base clock. so I would think that anything under 100MHz OC wouldn't be that much of a strain when it comes to TDP.

 

in the end, voltage is what makes a cpu/gpu gobble up more wattage, clocks alone dont really do that much

Sent from my Huawei Mate 8 NXT-AL10

 

i don't intend to push it too far cos and i don't think a 38 - 63 MHz OC would be considered as even mild.

 

The design on the 1070 is very robust so should play well with unlocking as prema stated, over-volting the GDDR5 would likely yield nice gains due to the better signal integrity too.

 

Don't forget mobile 1070 has a few extra cores on it.

 

Yep, 2048 vs 1920 (128 extra, one cluster), to make up for slightly lower boost speeds.