Exhibit 99.1

Inphi Corporation Announces Second Quarter 2013 Results

SANTA CLARA, Calif., August 1, 2013 – Inphi Corporation (NYSE: IPHI), a leading provider of high-speed mixed signal semiconductor solutions for the communications and computing markets, today announced financial results for its second quarter ended June 30, 2013.

Revenue for the second quarter of 2013 was $24.3 million, up 8% sequentially from $22.6 million reported for the first quarter of 2013. This compares to $23.3 million reported for the second quarter of 2012.

Gross margin under U.S. generally accepted accounting principles (GAAP) for the second quarter of 2013 was 63.5% of revenue, compared with 63.3% of revenue for the first quarter of 2013 and 64.3% of revenue for the second quarter of 2012.

GAAP net loss for the second quarter of 2013 was $1.5 million, or ($0.05) per diluted common share, compared with GAAP net loss of $7.7 million, or ($0.27) per diluted common share, for the first quarter of 2013 and GAAP net loss of $1.6 million, or ($0.06) per diluted common share, for the second quarter of 2012.

Inphi reports net income (loss), gross margin, and earnings per share in accordance with GAAP and, additionally, on a non-GAAP basis. A reconciliation of the GAAP to non-GAAP net income, gross margin, and earnings per share, as well as a description of the items excluded from the non-GAAP calculations, is included in the financial statements portion of this press release.

Gross margin on a non-GAAP basis for the second quarter of 2013 was 64.6% of revenue, compared with 64.3% for the first quarter of 2013 and 65.1% of revenue for the second quarter of 2012.

Non-GAAP net income for the second quarter of 2013 was $0.3 million, or $0.01 per diluted common share. This compared with non-GAAP net income of $31,000, or $0.00 per diluted common share, for the first quarter of 2013 and non-GAAP net income of $1.5 million, or $0.05 per diluted share, for the second quarter of 2012.

“We are pleased with having achieved 8% sequential growth in the second quarter driven by a resurgence of growth in the server market and continued growth in the 100G communication market,” said Ford Tamer, President and CEO of Inphi Corporation. “As Inphi’s newer technologies continue to come to market and ramp in production, we expect continued incremental growth in the second half of 2013.”

First Half 2013 Results

For the six months ended June 30, 2013, revenue was $46.9 million, compared with $43.5 million for the six months ended June 30, 2012. GAAP net loss for the six months ended June 30, 2013 was $9.1 million, or ($0.31) per diluted share, on approximately 29.1 million diluted weighted average common shares outstanding. This compared with GAAP net loss of $3.1 million, or ($0.11) per diluted share, on approximately 28.2 million diluted weighted average common shares outstanding for the six months ended June 30, 2012.

Non-GAAP net income for the six months ended June 30, 2013 was $0.4 million, or $0.01 per diluted weighted average common share outstanding, on approximately 30.6 million diluted weighted average common shares outstanding. This compared with non-GAAP net income of $2.5 million for the six months ended June 30, 2012, or $0.08 per diluted weighted average common share outstanding.

Business Outlook

The following statements are based on our current expectations for the third quarter of 2013. These statements are forward-looking and actual results may differ materially.

• Inphi expects revenues to be up 5% -11% sequentially in Q3 2013, resulting in a range of $25.5 million to $27.1 million.

• Non-GAAP gross margin is expected to be approximately 64.5% to 65.1%.

• Stock-based compensation expense is expected to be in the range of $4.7 million to $5.0 million.

• GAAP results are expected to be a net loss in a range between $2.0 million to $2.4 million, or ($0.06) - ($0.08) per diluted share, on 29.6 million estimated basic shares outstanding.

• Non-GAAP net income, excluding stock-based compensation expense, is expected to be in the range of $0.48 million to $1.1 million, or $0.02 - $0.04 per diluted share, on 31.3 million estimated fully diluted shares outstanding.

Quarterly Conference Call Today

Inphi plans to hold a conference call at 5:00 p.m. Eastern Time / 2:00 p.m. Pacific Time today with Ford Tamer, President and Chief Executive Officer, and John Edmunds, Chief Financial Officer, to discuss second quarter 2013 results.

The call can be accessed by dialing 866-318-8617; international callers should dial 617-399-5136, participant passcode: 71726124. Please dial-in ten minutes prior to the scheduled conference call time. A live and archived webcast of the call will be available on Inphi’s website at http://investors.inphi.com for up to 30 days after the call.

About Inphi

Inphi Corporation is a leading provider of high-speed, mixed signal semiconductor solutions for the communications and computing markets. Inphi’s end-to-end data transport platform delivers high signal integrity at leading-edge data speeds, addressing performance and bandwidth bottlenecks in networks, from fiber to memory. Inphi’s solutions minimize latency in computing environments and enable the rollout of next-generation communications infrastructure. Inphi’s solutions provide a vital interface between analog signals and digital information in high-performance systems, such as telecommunications transport systems, enterprise networking equipment, enterprise and data center servers, and storage platforms. To learn more about Inphi, visit www.inphi.com.

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Cautionary Note Concerning Forward-Looking Statements

Statements in the press release and certain matters to be discussed on the second quarter 2013 conference call regarding Inphi Corporation, which are not historical facts, are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements may be identified by terms such as outlook, believe, expect, may, will, provide, could, and should, and the negative of these terms or other similar expressions. These statements include statements relating to: our business outlook and current expectations for the third quarter of 2013, including our revenue, gross margin, stock-based compensation expense, operating performance, net income, earnings per share; expectations of our growth; expectations of economic trends and macroeconomic conditions; and benefits of using non-GAAP financial measures. These statements are based on current expectations and assumptions that are subject to risks and uncertainties. Actual results could differ materially from those anticipated as a result of various factors, including: the Company’s ability to sustain profitable operations due to its history of losses and accumulated deficit; dependence on a limited number of customers for a substantial portion of revenue and lack of long-term purchase commitments from our customers; product defects; risk related to intellectual property matters, lengthy sales cycle and competitive selection process; lengthy and expensive qualification processes; ability to develop new or enhanced products in a timely manner; development of the markets that the Company targets; market demand for the Company’s products; reliance on third parties to manufacture, assemble and test products; ability to compete; and other risks inherent in fabless semiconductor businesses. In addition, actual results could differ materially due to changes in tax rates or tax benefits available, changes in claims that may or may not be asserted, as well as changes in pending litigation. For a discussion of these and other related risks, please refer to Inphi Corporation’s recent SEC filings, including its Annual Report on Form 10-K for the year ended December 31, 2012, which are available on the SEC’s website at www.sec.gov. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date thereof. Inphi Corporation undertakes no obligation to update forward-looking statements for any reason, except as required by law, even as new information becomes available or other events occur in the future.

Inphi, the Inphi logo and Think fast are registered trademarks of Inphi Corporation. All other trademarks used herein are the property of their respective owners.

Corporate Contact:

Kim Markle

Inphi

408-217-7329

kmarkle@inphi.com

INPHI CORPORATION

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands of dollars, except share and per share amounts)

(Unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Revenue	$	24,339		$	23,308		$	46,923		$	43,509
Cost of revenue		8,893			8,332			17,185			15,756
Gross margin		15,446			14,976			29,738			27,753
Operating expenses:
Research and development		12,796			9,910			24,394			18,572
Sales and marketing		3,706			3,745			7,653			7,268
General and administrative		2,842			2,755			5,997			6,367
Total operating expenses		19,344			16,410			38,044			32,207
Income (loss) from operations		(3,898	)		(1,434	)		(8,306	)		(4,454	)
Other income		213			210			426			448
Income (loss) before income taxes		(3,685	)		(1,224	)		(7,880	)		(4,006	)
Provision (benefit) for income taxes		(2,211	)		346			1,265			(924	)
Net income (loss)	$	(1,474	)	$	(1,570	)	$	(9,145	)	$	(3,082	)
Earnings per share:
Basic	$	(0.05	)	$	(0.06	)	$	(0.31	)	$	(0.11	)
Diluted	$	(0.05	)	$	(0.06	)	$	(0.31	)	$	(0.11	)
Weighted-average shares used in computing earnings per share:
Basic		29,216,338			28,321,122			29,075,504			28,179,886
Diluted		29,216,338			28,321,122			29,075,504			28,179,886

The following table presents details of stock-based compensation expense included in each functional line item in the consolidated statements of operations above:

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(in thousands of dollars) (Unaudited)
Cost of revenue	$	281	$	190	$	514	$	319
Research and development		2,256		1,481		4,229		2,647
Sales and marketing		753		840		1,556		1,544
General and administrative		1,001		800		2,018		1,418
	$	4,291	$	3,311	$	8,317	$	5,928

INPHI CORPORATION

CONSOLIDATED BALANCE SHEETS

(in thousands of dollars)

(Unaudited)

	June 30, 2013			December 31, 2012
Assets
Current assets:
Cash and cash equivalents	$	29,177		$	30,161
Short-term investments in marketable securities		89,768			91,107
Accounts receivable, net		11,348			13,717
Inventories		5,641			4,894
Other current assets		3,220			4,518
Total current assets		139,154			144,397
Property and equipment, net		18,530			13,893
Goodwill		5,875			5,875
Deferred tax charge and other assets		5,839			5,909
Total assets	$	169,398		$	170,074
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	5,427		$	6,888
Accrued expenses and other current liabilities		4,958			5,116
Deferred revenue		1,520			1,083
Total current liabilities		11,905			13,087
Other liabilities		4,801			4,022
Total liabilities		16,706			17,109
Stockholders’ equity:
Common Stock		29			29
Additional paid-in capital		214,348			205,269
Accumulated deficit		(62,549	)		(53,404	)
Accumulated other comprehensive income		864			1,071
Total stockholders’ equity		152,692			152,965
Total liabilities and stockholders’ equity	$	169,398		$	170,074

INPHI CORPORATION

RECONCILIATION OF GAAP TO NON-GAAP MEASURES

(in thousands of dollars, except share and per share amounts)

To supplement the audited financial data presented on a GAAP basis, the Company discloses certain non-GAAP financial measures, which exclude stock-based compensation, abandoned office space costs and certain warranty, legal costs and other claims. These non-GAAP financial measures are not in accordance with GAAP. These results should only be used to evaluate the Company’s results of operations in conjunction with the corresponding GAAP measures. The Company believes that its non-GAAP financial information provides useful information to management and investors regarding financial and business trends relating to its financial condition and results of operations because it excludes charges or benefits that management considers to be outside of the Company’s core operating results. The Company believes that the non-GAAP measures of gross margin, net income and earnings per share in combination with the Company’s financial results calculated in accordance with GAAP, provide investors with additional perspective and a more meaningful understanding of the Company’s ongoing operating performance. In addition, the Company’s management uses these non-GAAP measures to review and assess the financial performance of the Company, to determine executive officer incentive compensation and to plan and forecast performance in future periods. The Company’s non-GAAP measurements are not prepared in accordance with GAAP, and are not an alternative to GAAP financial information, and may be calculated differently than non-GAAP financial information disclosed by other companies.

INPHI CORPORATION

RECONCILIATION OF GAAP TO NON-GAAP MEASURES

(in thousands of dollars, except share and per share amounts)

(Unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
GAAP net income (loss)	$	(1,474	)	$	(1,570	)	$	(9,145	)	$	(3,082	)
Adjusting items to GAAP net income (loss):
Operating expenses related to stock-based compensation expense, net of tax effect		2,628	(a)		2,445	(a)		5,135	(a)		4,369	(a)
Adjustment to revenue as a result of warranty claim		—			—			—			548	(b)
Legal expense and accrual of provisional costs		—			—			—			519	(c)
Abandoned office costs		(43	)(d)		—			90	(d)		—
Valuation allowance and delta in interim period tax allocation from GAAP to non-GAAP		(782	)(e)		666	(e)		4,280	(e)		155	(e)
Non-GAAP net income	$	329		$	1,541		$	360		$	2,509
Shares used in computing non-GAAP basic earnings per share		29,216,338			28,321,122			29,075,504			28,179,886
Shares used in computing non-GAAP diluted earnings per share		30,778,280			29,633,902			30,625,873			29,708,105
Non-GAAP earnings per share:
Basic	$	0.01		$	0.05		$	0.01		$	0.09
Diluted	$	0.01		$	0.05		$	0.01		$	0.08
GAAP gross margin as a % of revenue		63.5	%		64.3	%		63.4	%		63.8	%
Stock-based compensation:
Cost of revenue		1.1	%		0.8	%		1.1	%		0.7	%
Adjustment to revenue as a result of warranty claim		—			—			—			0.6	%
Non-GAAP gross margin as a % of revenue		64.6	%		65.1	%		64.5	%		65.1	%

(a) Reflects the stock-based compensation expense recorded relating to stock based awards. The Company excludes this item when it evaluates the continuing operational performance of the Company as management believes this GAAP measure is not indicative of its core operating performance.

(b) Reflects reduction in revenue as a result of warranty claim of a customer. The Company excludes this item when it evaluates the continuing operational performance of the Company as management believes this GAAP measure is not indicative of its core operating performance.

(c) Reflects legal expense and accrual of provisional costs with regard to employment and other related claims, net of insurance reimbursement. The Company excludes this item when it evaluates the continuing operational performance of the Company as management believes this GAAP measure is not indicative of its core operating performance.

(d) Reflects the cost of abandoned office space. The Company excludes this item when it evaluates the continuing operational performance of the Company as management believes this GAAP measure is not indicative of its core operating performance.

(e) Reflects the change in valuation allowance and delta in interim period tax allocation from GAAP to non-GAAP related to non-GAAP adjustments. The Company excludes this item when it evaluates the continuing operational performance of the Company as management believes this GAAP measure is not indicative of its core operating performance.

INPHI CORPORATION

RECONCILIATION OF GAAP TO NON-GAAP MEASURES -THIRD QUARTER 2013 GUIDANCE

(in thousands of dollars, except share and per share amounts)

(Unaudited)

	Three Months Ending September 30, 2013
	High			Low
Estimated GAAP net income (loss)	$	(2,000	)	$	(2,434	)
Adjusting items to estimated GAAP net income (loss):
Operating expenses related to stock-based compensation expense		5,000			4,700
Tax effect of stock-based compensation expense		(1,900	)		(1,786	)
Estimated non-GAAP net income	$	1,100		$	480
Shares used in computing estimated non-GAAP diluted earnings per share		31,300,000			31,300,000
Estimated non-GAAP diluted earnings per share	$	0.04		$	0.02