Hi everyone.

If anybody's interested, this is a simple and quick performance comparison for my new PC based on i7-7700K + Gtx 1080 Ti,
that I purchased some weeks ago.

It's a simple comparison with my old Laptop based on i7-4790K+Quadro K3100M.

I did this test using latest unofficial version of Blender (2.79).

This is the final render (1920x1080 512 Sample) :



These are the scene rendering setup :
1920x1080 512 samples, 1 material with "Principled BSDF" PBR Shader, HDRI Background and illumination
Light Paths :





And these are the results :

-------------------------
Laptop Clevo P771ZM :
-------------------------
CPU : i7-4790K 4.00 - 4.40 Ghz
RAM : 32 Gb (2x16) HyperX Impact DDR3L-1600 CL9
GPU : Nvidia Quadro K3100M 4GB 768 Cuda Cores
HD : 512GB 850 EVO Basic SSD Sata 6Gb/s

BEST CPU RENDERING TIME (Tile Size 16) : 03:34:30 (minutes:seconds:hundredths)
BEST GPU RENDERING TIME (Tile Size 384) : 02:39:65 (minutes:seconds:hundredths)

CPU Tile Size 16 : 03:34:30 * BEST Laptop CPU RESULT
CPU Tile Size 32 : 03:34:66
CPU Tile Size 64 : 03:37:26

GPU Tile Size 64 : 03:55:92
GPU Tile Size 96 : 03:22:19
GPU Tile Size 128 : 03:02:47
GPU Tile Size 192 : 02:48:39
GPU Tile Size 256 : 02:42:66
GPU Tile Size 384 : 02:39:65 ** BEST Laptop OVERALL RESULT
GPU Tile Size 512 : 02:42:14


-------------------------
i7-7700K + Gtx 1080 Ti PC :
-------------------------
CPU : i7-7700K 4.20 - 4.50 Ghz
RAM : 32 Gb (2x16) Corsair Vengeance LPX C15 DDR4-3000Mhz
GPU : Svga MSI GeForce GTX 1080 Ti Armor 11G OC 11GB GDDR5X 3584 Cuda Cores
HD : 500 GB SSD SAMSUNG 960 EVO NVMe SSD, PCIe 3.0 M.2 Type 2280

BEST CPU RENDERING TIME (Tile Size 32) : 02:53:46 (minutes:seconds:hundredths)
BEST GPU RENDERING TIME (Tile Size 512) : 00:26:53 (minutes:seconds:hundredths)

CPU Tile Size 16 : 02:53:59
CPU Tile Size 32 : 02:53:46 * BEST PC CPU RESULT
CPU Tile Size 64 : 02:56:14

GPU Tile Size 64 : 01:35:66
GPU Tile Size 96 : 00:57:40
GPU Tile Size 128 : 00:43:48
GPU Tile Size 192 : 00:34:46
GPU Tile Size 256 : 00:29:78
GPU Tile Size 384 : 00:27:40
GPU Tile Size 512 : 00:26:53 ** BEST PC OVERALL RESULT
GPU Tile Size 640 : 00:27:42
GPU Tile Size 768 : 00:27:77
GPU Tile Size 896 : 00:28:18
GPU Tile Size 1024 : 00:28:52

**************************************
COMPARISON :
**************************************

1) BEST PC CPU vs BEST Laptop CPU : 123.54 %

2) BEST PC GPU vs BEST Laptop GPU : 601.77 %

3) BEST PC GPU vs BEST PC CPU : 653.82 %

4) BEST Laptop GPU vs BEST Laptop CPU : 134.23 %

5) BEST PC GPU vs BEST Laptop CPU : 807.76 %

6) BEST Laptop GPU vs BEST PC CPU : 108.65 %

Ciao!