Looking for help calculating power supply wattage

Hello!

I'm sure this is a commonly and annoyingly asked question but I'm looking for some help. I'm looking for a new video card for my husband's computer and while I have found one, I am having trouble calculating what wattage power supply he needs for it. He's currently running on the standard 280watt power supply that came with his pre-manufactured computer and I am relatively positive I'll have to replace it to utilize the video card I'm going to purchase. I used both the eXtreme Power Supply Calculator as well as the newegg calculator and came up with two vastly different wattage totals. If anyone could help, I'd be grateful. I don't want to make a mistake on something like this.

His current computer is a Lenovo K450e 57328801. I have not upgraded it since purchasing it recently so it currently has everything that comes pre-built in it. While this link isn't necessarily too helpful spec-wise, here it is incase needed for reference. I purchased it off of the official Lenovo website but this link gives more information than Lenovo does:

http://www.amazon.com/Lenovo-K450e-57328801-Generation-i5-4460/dp/B00KNM55SM

The graphics card I intend to purchase is the GeForce GTX Ti as seen here:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814125502

As for the dxdiag, it is a massive wall of text so I cut off a bit of it. If the rest is needed by all means let me know and I'll post it, but for the sake of not having a massively long thread I'll post a snip of it.

_____________________________________________________________________

------------------
System Information
------------------
Time of this report: 2/28/2015, 07:48:45
Machine name: SAMSCOMP
Operating System: Windows 8.1 64-bit (6.3, Build 9600) (9600.winblue_r7.150109-2022)
Language: English (Regional Setting: English)
System Manufacturer: LENOVO
System Model: 10181
BIOS: I1KT38AUS
Processor: Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz (4 CPUs), ~3.2GHz
Memory: 8192MB RAM
Available OS Memory: 8090MB RAM
Page File: 2501MB used, 7380MB available
Windows Dir: C:\windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.03.9600.16384 64bit Unicode

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DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Sound Tab 3: No problems found.
Sound Tab 4: No problems found.
Input Tab: No problems found.

--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)

---------------
Display Devices
---------------
Card name: Intel(R) HD Graphics 4600
Manufacturer: Intel Corporation
Chip type: Intel(R) HD Graphics Family
DAC type: Internal
Device Type: Full Device
Device Key: Enum\PCI\VEN_8086&DEV_0412&SUBSYS_366D17AA&REV_06
Display Memory: 1792 MB
Dedicated Memory: 0 MB
Shared Memory: 1792 MB
Current Mode: 1600 x 900 (32 bit) (59Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: HF207
Monitor Id: HSG18C5
Native Mode: 1600 x 900(p) (59.978Hz)
Output Type: HDMI
Driver Name: igdumdim64.dll,igd10iumd64.dll,igd10iumd64.dll,igdumdim32,igd10iumd32,igd10iumd32
Driver File Version: 10.18.0010.3412 (English)
Driver Version: 10.18.10.3412
DDI Version: 11.1
Feature Levels: 11.1,11.0,10.1,10.0,9.3,9.2,9.1
Driver Model: WDDM 1.3
Graphics Preemption: DMA
Compute Preemption: Thread
Miracast: Supported
Hybrid Graphics GPU: Integrated
Power P-states: Not Supported
Driver Attributes: Final Retail
Driver Date/Size: 1/22/2014 00:51:34, 19380224 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B78E66-4752-11CF-4E79-6716BBC2C735}
Vendor ID: 0x8086
Device ID: 0x0412
SubSys ID: 0x366D17AA
Revision ID: 0x0006
Driver Strong Name: oem2.inf:5f63e534dd898f5e:iHSWD_w81:10.18.10.3412ci\ven_8086&dev_0412
Rank Of Driver: 00DA2001
Video Accel: ModeMPEG2_A ModeMPEG2_C ModeWMV9_C ModeVC1_C
DXVA2 Modes: DXVA2_ModeMPEG2_VLD DXVA2_ModeMPEG2_IDCT DXVA2_ModeWMV9_IDCT DXVA2_ModeVC1_IDCT DXVA2_ModeH264_VLD_NoFGT
Deinterlace Caps: {BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(YV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(YV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(NV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(NV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC1,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC1,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC1,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC3,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC3,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC3,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC4,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC4,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC4,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
D3D9 Overlay: Supported
DXVA-HD: Supported
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled

-------------
Sound Devices
-------------
Description: Speakers (2- Logitech G930 Headset)
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: USB\VID_046D&PID_0A1F&REV_0100&MI_00
Manufacturer ID: 65535
Product ID: 65535
Type: WDM
Driver Name: USBAUDIO.sys
Driver Version: 6.03.9600.16490 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 3/18/2014 03:54:42, 121088 bytes
Other Files:
Driver Provider: Microsoft
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

Description: Speakers (Realtek High Definition Audio)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_17AA366D&REV_1003
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: RTKVHD64.sys
Driver Version: 6.00.0001.7027 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 8/27/2013 06:37:54, 3613528 bytes
Other Files:
Driver Provider: Realtek Semiconductor Corp.
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

Description: Realtek Digital Output (Realtek High Definition Audio)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_17AA366D&REV_1003
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: RTKVHD64.sys
Driver Version: 6.00.0001.7027 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 8/27/2013 06:37:54, 3613528 bytes
Other Files:
Driver Provider: Realtek Semiconductor Corp.
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

Description: HF207 (Intel(R) Display Audio)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_8086&DEV_2807&SUBSYS_80860101&REV_1000
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: IntcDAud.sys
Driver Version: 6.16.0000.3131 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 1/22/2014 00:57:34, 450520 bytes
Other Files:
Driver Provider: Intel(R) Corporation
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

---------------------
Sound Capture Devices
---------------------
Description: Microphone (2- Logitech G930 Headset)
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: USBAUDIO.sys
Driver Version: 6.03.9600.16490 (English)
Driver Attributes: Final Retail
Date and Size: 3/18/2014 03:54:42, 121088 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF

Description: Stereo Mix (Realtek High Definition Audio)
Default Sound Capture: No
Default Voice Capture: No
Driver Name: RTKVHD64.sys
Driver Version: 6.00.0001.7027 (English)
Driver Attributes: Final Retail
Date and Size: 8/27/2013 06:37:54, 3613528 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF

---------------------
Video Capture Devices
Number of Devices: 0
---------------------
-------------------
DirectInput Devices
-------------------
Device Name: Mouse
Attached: 1
Controller ID: n/a
Vendor/Product ID: n/a
FF Driver: n/a

Device Name: Keyboard
Attached: 1
Controller ID: n/a
Vendor/Product ID: n/a
FF Driver: n/a

Device Name: Lenovo Black Silk USB Keyboard
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x17EF, 0x602D
FF Driver: n/a

Device Name: Lenovo Black Silk USB Keyboard
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x17EF, 0x602D
FF Driver: n/a

Device Name: Audio Controls
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x046D, 0x0A1F
FF Driver: n/a

Poll w/ Interrupt: No

-----------
USB Devices
-----------
+ USB Root Hub
| Vendor/Product ID: 0x8086, 0x8C2D
| Matching Device ID: USB\ROOT_HUB20
| Service: usbhub
| Driver: usbhub.sys, 7/24/2014 09:28:38, 419648 bytes
| Driver: usbd.sys, 5/31/2014 04:07:07, 27480 bytes
|
+-+ Generic USB Hub
| | Vendor/Product ID: 0x8087, 0x8008
| | Location: Port_#0001.Hub_#0001
| | Matching Device ID: USB\Class_09
| | Service: usbhub
| | Driver: usbhub.sys, 7/24/2014 09:28:38, 419648 bytes
| | Driver: usbd.sys, 5/31/2014 04:07:07, 27480 bytes

----------------
Gameport Devices
----------------

------------
PS/2 Devices
------------
+ HID Keyboard Device
| Vendor/Product ID: 0x17EF, 0x602D
| Matching Device ID: HID_DEVICE_SYSTEM_KEYBOARD
| Service: kbdhid
| Driver: kbdhid.sys, 8/22/2013 05:39:13, 32256 bytes
| Driver: kbdclass.sys, 8/22/2013 06:43:45, 58208 bytes
|
+ HID-compliant mouse
| Vendor/Product ID: 0x1532, 0x0016
| Matching Device ID: HID_DEVICE_SYSTEM_MOUSE
| Service: mouhid
| Driver: mouhid.sys, 8/22/2013 05:39:13, 30208 bytes
| Driver: mouclass.sys, 8/22/2013 06:43:45, 51040 bytes

------------------------
Disk & DVD/CD-ROM Drives
------------------------
Drive: C:
Free Space: 819.0 GB
Total Space: 927.0 GB
File System: NTFS
Model: WDC WD10EZEX-08M2NA0

Drive: F:
Model: HL-DT-ST DVD-RAM GHC0N
Driver: c:\windows\system32\drivers\cdrom.sys, 6.03.9600.16384 (English), 8/22/2013 02:46:35, 164352 bytes

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Thank you to anyone who assists me in this. I have been stressing over it a bit and would really appreciate the help.