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Legion Slim 5i Gen 8 RTX 4050 (2023) vs Katana 15 B13 RTX 4070 (2023)

Lenovo Legion Slim 5i Gen 8 RTX 4050 (2023) vs MSI Katana 15 B13 RTX 4070 (2023)

What Legion Slim 5i Gen 8 RTX 4050 (2023) does better (12) and where Katana 15 B13 RTX 4070 (2023) wins (11) — every spec side by side.

Lenovo · 2023Legion Slim 5i Gen 8 RTX 4050 (2023)

5.8Score

12 advantages

MSI · 2023Katana 15 B13 RTX 4070 (2023)

6.0Score

11 advantages≈ $2,150

Higher score

4.1Graphics7.4

4.3Overall performance6.8

5.9Display2.3

4.9Memory & storage4.4

6.9Battery & portability3.9

8.8Features & cooling3.3

Dimensions

Size comparison

Legion Slim 5i Gen 8 RTX 4050 (2023)Katana 15 B13 RTX 4070 (2023)

	Legion Slim 5i Gen 8 RTX 4050 (2023)	Katana 15 B13 RTX 4070 (2023)	Difference
Depth	260.3 mm	259 mm	+1.3 mm
Width	359.7 mm	359 mm	+0.7 mm
Thickness	25.2 mm	25 mm	+0.2 mm
Weight	2.3 kg	2.2 kg	=

Drawn to the same scale from the official dimensions (front and side).

Why is Legion Slim 5i Gen 8 RTX 4050 (2023) better than Katana 15 B13 RTX 4070 (2023)?

Battery capacity80 Wh vs 54 Wh+50%
SSD (up to)2,048 GB vs 1,000 GB2×
Thunderbolt or USB4Yes · Katana 15 B13 RTX 4070 (2023): No
G-Sync / FreeSyncYes · Katana 15 B13 RTX 4070 (2023): No
Advanced OptimusYes · Katana 15 B13 RTX 4070 (2023): No
USB-C charging (Power Delivery)Yes · Katana 15 B13 RTX 4070 (2023): No
USB-C ports2 vs 12×
SD card readerYes · Katana 15 B13 RTX 4070 (2023): No
Brightness300 nits vs 250 nits+20%
Wi-Fi standardWi-Fi 6E vs Wi-Fi 6+8%
Webcam1,080p vs 720p+50%
Screen size16″ vs 15.6″+3%

Why is Katana 15 B13 RTX 4070 (2023) better than Legion Slim 5i Gen 8 RTX 4050 (2023)?

Video memory6 GB vs 32 GB5.3×
3DMark Steel Nomad Light8,352 vs 13,080+57%
GPU compute (FP32)11.7 TFLOPS vs 18.2 TFLOPS+56%
GPU shader cores2,560 vs 4,608+80%
GPU power (TGP)100 W vs 105 W+5%
Weight2.3 kg vs 2.25 kg+2%
RAM (base)8 GB vs 16 GB2×
Max. supported RAM32 GB vs 64 GB2×
SSD (base)512 GB vs 1,000 GB+95%
USB-A ports2 vs 3+50%
Key travel1.5 mm vs 1.7 mm+13%

Specifications

Side by side

Only differences	Lenovo Legion Slim 5i Gen 8 RTX 4050 (2023)5.8	MSI Katana 15 B13 RTX 4070 (2023)≈ $2,1506.0
Graphics
Graphics card	GeForce RTX 4050 Laptop	GeForce RTX 4070 Laptop
GPU maker	NVIDIA	NVIDIA
GPU power (TGP)	100 W	105 W
Video memory	6 GB	32 GB
Video memory type	GDDR6	GDDR6
GPU shader cores	2,560	4,608
GPU compute (FP32)	11.7 TFLOPS	18.2 TFLOPS
3DMark Steel Nomad Light	8,352	13,080
Processor
Processor	Core i5-12450H	Core i9-13900H
CPU maker	Intel	Intel
CPU cores	8	8
CPU threads	12	—
Max CPU clock	4.4 GHz	4.4 GHz
Processor options	Core i5-12450H, Core i5-13420H, Core i5-13500H, Core i7-13700H	Core i7-13620H, Core i9-13900H
Geekbench 6 multi-core	9,732	—
Geekbench 6 single-core	2,290	—
Cinebench 2024 multi-core	624	—
Display
Screen size	16″	15.6″
Resolution	1920 × 1200	1920 × 1080
Resolution class	Full HD (1080p/1200p)	Full HD (1080p/1200p)
Refresh rate	144 Hz	144 Hz
Panel type	IPS	IPS
Brightness	300 nits	250 nits
sRGB coverage	—	57%
Response time	—	33 ms
DCI-P3 coverage	—	38%
Pixel density	142 ppi	141 ppi
Aspect ratio	16:10	16:9
G-Sync / FreeSync	Yes	No
Advanced Optimus	Yes	No
MUX switch	Yes	Yes
HDR	No	No
Touchscreen	No	No
Memory & storage
RAM (up to)	32 GB	32 GB
RAM (base)	8 GB	16 GB
RAM type	DDR5	DDR5
RAM speed	5,200 MHz	5,200 MHz
Max. supported RAM	32 GB	64 GB
RAM slots	2	2
Upgradable RAM	Yes	Yes
SSD (up to)	2,048 GB	1,000 GB
SSD (base)	512 GB	1,000 GB
M.2 SSD slots	2	2
SSD interface	PCIe 4.0 x4	PCIe 4.0 x4
Battery & power
Battery capacity	80 Wh	54 Wh
Power adapter	230 W	200 W
USB-C charging (Power Delivery)	Yes	No
Design & cooling
Weight	2.3 kg	2.25 kg
Thickness	25.2 mm	25 mm
Width	359.7 mm	359 mm
Depth	260.3 mm	259 mm
Body material	Aluminium, Plastic	Plastic
Colours	Gray	Black
Cooling fans	2	2
Vapor chamber cooling	No	No
Liquid metal (CPU)	No	No
Fan noise (max. load)	—	54.4 dB
Ports & wireless
Thunderbolt / USB4	Thunderbolt 4	—
Thunderbolt or USB4	Yes	No
USB-C ports	2	1
USB-A ports	2	3
HDMI	HDMI 2.1	HDMI 2.1
HDMI 2.1	Yes	Yes
(Mini) DisplayPort	No	No
Ethernet	—	1 Gbit/s
Ethernet port	Yes	Yes
SD card reader	Yes	No
3.5 mm audio jack	Yes	Yes
Wi-Fi standard	Wi-Fi 6E	Wi-Fi 6
Bluetooth	5.2	5.2
Keyboard & camera
Backlit keyboard	Yes	Yes
Numeric keypad	Yes	Yes
Key travel	1.5 mm	1.7 mm
Webcam	1,080p	720p
IR camera (face login)	No	No
Fingerprint reader	No	No
Audio
Speakers	2.0	2 speakers
Dolby Atmos	No	No