SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* QUAKER CAPITAL MANAGEMENT CORP (Last) (First) (Middle) 601 TECHNOLOGY DRIVE SUITE 310 (Street) CANONSBURG PA 15317 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol PERFORMANCE TECHNOLOGIES INC \DE\ [ PTIX ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 04/25/2008
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, $.01 par value	04/25/2008		P		52,600(2)	A	$4.5313(3)	1,410,244(4)	I	Through two partnerships(1)
Common Stock, $.01 par value	04/28/2008		P	V	1,171(5)	A	$4.5804(6)	1,411,415(7)	I	Through two partnerships(1)
Common Stock, $.01 par value	04/29/2008		P	V	9,000(8)	A	$4.6111(9)	1,420,415(10)	I	Through two partnerships(1)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* QUAKER CAPITAL MANAGEMENT CORP (Last) (First) (Middle) 601 TECHNOLOGY DRIVE SUITE 310 (Street) CANONSBURG PA 15317 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Quaker Capital Partners I, L.P. (Last) (First) (Middle) THE ARROTT BUILDING 401 WOOD STREET SUITE 1300 (Street) PITTSBURGH PA 15222 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Quaker Premier, L.P. (Last) (First) (Middle) THE ARROTT BUILDING 401 WOOD STREET SUITE 1300 (Street) PITTSBURGH PA 15222 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Quaker Capital Partners II, L.P. (Last) (First) (Middle) THE ARROTT BUILDING 401 WOOD STREET SUITE 1300 (Street) PITTSBURGH PA 15222 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Quaker Premier II, L.P. (Last) (First) (Middle) THE ARROTT BUILDING 401 WOOD STREET SUITE 1300 (Street) PITTSBURGH PA 15222 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Schoeppner Mark G (Last) (First) (Middle) THE ARROTT BUILDING 401 WOOD STREET, SUITE 1300 (Street) PITTSBURGH PA 15222 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. The shares of common stock of Performance Technologies, Inc. reported on this Form 4 are owned of record by Quaker Capital Partners I, L.P. ("Quaker I") and Quaker Capital Partners II, L.P. ("Quaker II"). Quaker Premier, L.P. ("Premier") is the sole general partner of Quaker I. Quaker Premier II, L.P. ("Premier2") is the sole general partner of Quaker II. Quaker Capital Management Corporation ("QCMC") is the sole general partner of each of Premier and Premier2. Mark G. Schoeppner is QCMC's President and sole executive officer and director. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or any other purpose.

2. 31,400 of these shares of the Issuer's common stock were purchased by Quaker I and the remaining 21,200 shares were purchased by Quaker II.

3. Represents the weighted average purchase price of all shares of the Issuer's common stock purchased on April 25, 2008. The price range of the purchases on this date was $4.53 - $4.55 per share.

4. 876,800 of these shares are owned of record by Quaker I and 533,444 of these shares are owned of record by Quaker II.

5. 700 of these shares of the Issuer's common stock were purchased by Quaker I and the remaining 471 shares were purchased by Quaker II.

6. Represents the weighted average purchase price of all shares of the Issuer's common stock purchased on April 28, 2008. The price range of the purchases on this date was $4.55 - $4.60 per share.

7. 877,500 of these shares are owned of record by Quaker I and 533,915 of these shares are owned of record by Quaker II.

8. 5,600 of these shares of the Issuer's common stock were purchased by Quaker I and the remaining 3,400 shares were purchased by Quaker II.

9. Represents the weighted average purchase price of all shares of the Issuer's common stock purchased on April 29, 2008. The price range of the purchases on this date was $4.57 - $4.65 per share.

10. 883,100 of these shares are owned of record by Quaker I and 537,315 of these shares are owned of record by Quaker II.

	/s/ QUAKER CAPITAL PARTNERS I, L.P. By: Quaker Premier, L.P., its general partner By: Quaker Capital Management Corporation, its general partner By: Mark G. Schoeppner, President	04/29/2008
	/s/ QUAKER PREMIER, L.P. By: Quaker Capital Management Corporation, its general partner By: Mark G. Schoeppner, President By: Mark G. Schoeppner, President	04/29/2008
	/s/ QUAKER CAPITAL PARTNERS II, L.P. By: Quaker Premier, L.P., its general partner By: Quaker Capital Management Corporation, its general partner By: Mark G. Schoeppner, President	04/29/2008
	/s/ QUAKER PREMIER II, L.P. By: Quaker Capital Management Corporation, its general partner By: Mark G. Schoeppner, President	04/29/2008
	/s/ QUAKER CAPITAL MANAGEMENT CORPORATION By: Mark G. Schoeppner, President	04/29/2008
	/s/ Mark G. Schoeppner	04/29/2008
	** Signature of Reporting Person	Date
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