I recently purchased a Lenovo t450s laptop and thought some people here might be interested in how it performs in Vegas Pro 12 (latest build).
For testing I used the old Sony press project and rendered to the XDCAM EX template 35mbps 60i. I used this template because it's relatively easy to transcode to from a CPU standpoint and this would tend to isolate Broadwell's CPU and GPU to "assemble" the timeline. Also my old benchmark site is still available even though I'm not updating it anymore so there are some scores to use for comparison.
Rendering using the CPU only the Broadwell 5200u (2.5GHz when running dual core) required 416 seconds. To put this into perspective my old Core2Duo T7200 laptop (2GHz) requires 984 seconds and my 4770k at 3.9GHz requires 168 seconds.
With HD5500 GPU acceleration turned on the Broadwell time decreased from 416 seconds to 149 seconds, which is of course a massive improvement. For comparison purposes my 4770k with it's HD4600 ran this bench in 125 seconds with GPU acceleration turned on.
I found a few things interesting here.
1. With GPU acceleration turned on the Broadwell laptop performed very closely to the much more powerful 4770k processor. This is because while it doesn't have nearly the compute CPU horsepower, it does have 24EU's in the GPU (as opposed to 20 in the HD4600) and those EU's are supposedly more efficient. So even though the Broadwell GPU is down a few hundred MHz to the Haswell GPU, it seems to more than make up that difference with a greater number of more efficient EU's.
2. In a practical sense editing is quite responsive with the Broadwell laptop. As I noted in another thread at Good/Quarter full frame rate is held through nearly all of the preview project and even at Good/Half the preview speed is more than acceptable.
Coupled with the Full HD matte IPS display the t450s makes a nice little on the go editing station.
For testing I used the old Sony press project and rendered to the XDCAM EX template 35mbps 60i. I used this template because it's relatively easy to transcode to from a CPU standpoint and this would tend to isolate Broadwell's CPU and GPU to "assemble" the timeline. Also my old benchmark site is still available even though I'm not updating it anymore so there are some scores to use for comparison.
Rendering using the CPU only the Broadwell 5200u (2.5GHz when running dual core) required 416 seconds. To put this into perspective my old Core2Duo T7200 laptop (2GHz) requires 984 seconds and my 4770k at 3.9GHz requires 168 seconds.
With HD5500 GPU acceleration turned on the Broadwell time decreased from 416 seconds to 149 seconds, which is of course a massive improvement. For comparison purposes my 4770k with it's HD4600 ran this bench in 125 seconds with GPU acceleration turned on.
I found a few things interesting here.
1. With GPU acceleration turned on the Broadwell laptop performed very closely to the much more powerful 4770k processor. This is because while it doesn't have nearly the compute CPU horsepower, it does have 24EU's in the GPU (as opposed to 20 in the HD4600) and those EU's are supposedly more efficient. So even though the Broadwell GPU is down a few hundred MHz to the Haswell GPU, it seems to more than make up that difference with a greater number of more efficient EU's.
2. In a practical sense editing is quite responsive with the Broadwell laptop. As I noted in another thread at Good/Quarter full frame rate is held through nearly all of the preview project and even at Good/Half the preview speed is more than acceptable.
Coupled with the Full HD matte IPS display the t450s makes a nice little on the go editing station.